WHO Releases First Guideline for Chronic Low Back Pain

By Pat Anson, PNN Editor

The World Health Organization (WHO) has released its first-ever guideline for managing chronic low back pain, recommending treatments such as exercise, physical therapy, chiropractic care and non-steroidal anti-inflammatory drugs (NSAIDs).

Chronic low back pain — also known as “non-specific low back pain” — is defined as pain that persists longer than three months, with symptoms that cannot be accounted for by a structural spinal problem or disease process such as arthritis.

Although lower back pain (LBP) is the leading cause of disability worldwide – affecting about 619 million people – there has been little certainty about how to treat it. Almost all of the clinical trial evidence reviewed by WHO’s guideline development group was considered low or very low quality, a persistent problem.in many medical guidelines dealing with pain.

The lengthy 274-page guideline takes a dim view of some commonly used therapies for LBP, such as muscle relaxants, anticonvulsants, steroids, opioids, transcutaneous electrical nerve stimulation (TENS), and injectable anesthetics – treatments that are primarily used in high-income countries. WHO recommends a more holistic approach to LBP, using therapies that are affordable and accessible to more people.

"Addressing chronic low back pain requires an integrated, person-centred approach. This means considering each person's unique situation and the factors that might influence their pain experience," Dr. Anshu Banerjee, WHO Director for Maternal, Newborn, Child, Adolescent Health and Ageing, said in a press release. "We are using this guideline as a tool to support a holistic approach to chronic low back pain care and to improve the quality, safety and availability of care."

WHO recommends that adults with chronic LBP start with treatments that are the least invasive and least potentially harmful. The values and preferences of patients should also be considered, as they are more likely to adhere to therapies they consider helpful.  

Recommended Treatments for Chronic LBP

  • Patient education and counseling

  • Exercise or physical therapy

  • Acupuncture or dry needling

  • Spinal manipulation (chiropractic care)

  • Massage

  • Cognitive behavioral therapy or mindfulness

  • NSAIDs

  • Topical cayenne pepper

The guideline states that opioid analgesics “should never be used as a stand-alone treatment” for chronic LBP. When opioids are used alongside other therapies, the lowest dose should be prescribed and only for a short duration, according to WHO.

Recommendations against routine use are also made about many other pharmaceuticals, including antidepressants, anticonvulsants, muscle relaxers, glucocorticoids (steroids), weight loss drugs, and injectable anesthetics such as lidocaine or bupivacaine.  

No recommendations are made about benzodiazepines, cannabis or acetaminophen (paracetamol), primarily due to lack of evidence, but also because of potentially harmful side effects. Cayenne pepper is the only herbal remedy recommended by WHO.

The guideline does not address surgical procedures such as spinal fusions and spinal cord stimulators, or invasive procedures such as epidural injections.

WHO’s 25-member guideline development group included a broad range of clinical experts from around the world. Among them is Roger Chou, MD, a researcher and longtime critic of opioid prescribing who heads the Pacific Northwest Evidence-based Practice Center. Chou is a co-author of the 2016 and 2022 CDC opioid guidelines, and has collaborated on several occasions with members of Physicians for Responsible Opioid Prescribing (PROP), an anti-opioid advocacy group. Chou let his Oregon medical license lapse in 2022.

One of the clinical trials reviewed by WHO’s guideline group is a controversial Australian study – known as the OPAL study -- that found low dose opioids gave little relief to patients with short-term back and neck pain. The OPAL study has been panned by critics because the treatment period only lasted six weeks and used a formulation of oxycodone that would not normally be used in clinical practice. Nevertheless, it’s been cited as evidence that “prolonged opioid use” is ineffective.

In 2021, WHO updated its guideline on the treatment of chronic pain in children, recommending that prescription opioids only be used for children who are dying or seriously ill. An earlier WHO guideline that recommended more pediatric use of opioids was withdrawn in 2019, after two U.S. congressmen accused the United Nation’s health agency of being “corruptly influenced” by opioid manufactures.  

Will Thinking About Chronic Pain Differently Help Reduce It?

By Pat Anson, PNN Editor

Want to make your chronic back pain go away?

Then stop thinking about the physical cause of your pain with words like accident, bad posture or disc bulge.

Start attributing the cause of your pain to your own emotions. Use words like anxiety, stress and fear.

That’s the conclusion of a new analysis of an old study that found pain reprocessing therapy (PRT) beneficial in a small group of patients with chronic back pain. PRT is based on the theory that patients can reduce or even stop their pain simply by changing the way they think about it, without the use of drugs, injections or physical therapy.

“Millions of people are experiencing chronic pain and many haven’t found ways to help with the pain, making it clear that something is missing in the way we’re diagnosing and treating people,” says lead author Yoni Ashar, PhD, assistant professor of internal medicine at the University of Colorado Anschutz Medical Campus.

“Our study shows that discussing pain attributions with patients and helping them understand that pain is often ‘in the brain’ can help reduce it.”

Ashar and his colleagues were early proponents of PRT. In a 2021 clinical study, they recruited 151 people with moderate back pain, with an intensity of at least four on a pain scale of zero to 10. Participants assigned to PRT were encouraged to reappraise the severity of their pain and to think about it differently by engaging in movements they were afraid to do. About two-thirds found that helpful in reducing or even eliminating their pain.

In their new study, published in JAMA Network Open, researchers doubled down on their previous study by performing a “secondary analysis” of those same 151 people. Did they attribute their pain to a physical or emotional cause? What words did they use to describe it?

Before PRT treatment, only 10% of participants’ thought their back pain was mind or brain-related. After PRT, about half of them did. And the more they thought about their pain as a mind or brain process, the greater the reduction in pain they reported.

The graphic below demonstrates how participants thought about their pain differently before and after PRT. In a word cloud text analysis of their responses, PRT recipients were more likely to use words like stress and anxiety, and less likely to use words like muscles and injury.

Words Associated with Chronic Pain Before and After PRT

JAMA NETWORK OPEN

“These results show that shifting perspectives about the brain’s role in chronic pain can allow patients to experience better results and outcomes,” Ashar said.

“This study is critically important because patients’ pain attributions are often inaccurate. We found that very few people believed their brains had anything to do with their pain. This can be unhelpful and hurtful when it comes to planning for recovery since pain attributions guide major treatment decisions, such as whether to get surgery or psychological treatment.”

There are a number of caveats to this study. First is the small size. Second, participants had only low to moderate back pain, not the severe intractable pain caused by a spinal injury or disease. Thinking about your pain differently isn’t going to do much good for someone with arachnoiditis or Ehlers Danlos syndrome – and it is worrisome that studies like these are often used to deny patients with severe pain access to effective treatment such as opioid medication.

Third, pain reattribution was only modestly effective (about 9% on average) in relieving pain. Some participants who bought into the idea of thinking differently about their pain had no pain relief, leading the authors to admit that “reattribution alone is not sufficient for pain relief.”

Despite these weaknesses, researchers hope their study will encourage providers to talk to their patients more about the possible causes of their chronic pain.

“Often, discussions with patients focus on biomedical causes of pain. The role of the brain is rarely discussed,” said Ashar. “With this research, we want to provide patients as much relief as possible by exploring different treatments, including ones that address the brain drivers of chronic pain.”

You can learn more about PRT therapy by reading “The Way Out,” a book by psychotherapist Alan Gordon, who uses mindfulness and cognitive behavioral therapy to reduce the fear that many patients have about their pain and its triggers.

There Is Help Out There, But You Have Look For It

By Ann Marie Gaudon, PNN Columnist

As a patient, you strive to be heard. Nowhere is this truer than when your medical issues are chronic and complex. However, when your physicians dismiss, minimize, invalidate, and/or ignore what you say, this can lead to a misdiagnosis or lack of diagnosis – which can lead to your condition getting worse.

Physicians rely on test results, but what if the test is an epic failure? What if there is no test at all to diagnose you?

Medical providers can erroneously blame your suffering on your age, race, sexuality, gender, weight or other factors that have nothing to do with your complaint. It’s also not uncommon for a physician to tell a patient that there is nothing at all wrong with them and that it’s essentially “all in their head.”

Even if your symptoms do not resolve, further testing may not be offered. You may not be listened to or you may have your symptoms downplayed.

I learned that the hard way after experiencing a significant back injury in 2017. I thought I was going to be disabled forever. My own medical system could not help me. I was told I had to wait six weeks for an appointment and if I was still in pain then, an MRI would be ordered.

The MRI was ordered and the imaging showed a significant injury. But my general practitioner could offer no help aside from a mild muscle relaxant. I was referred to an orthopedic surgeon who could also offer no help. I never considered surgery – truth be told it terrified me – but I was looking for any treatment to help myself heal.

Fate brought me to a CBC radio interview with Stuart McGill, PhD, Professor Emeritus at the University of Waterloo. I immediately bought McGill’s book “Back Mechanic” and started my healing journey with one of his master clinicians.

I learned the medical system knows virtually nothing about the injury I had and had no way to help me heal from it.

Fast forward six years. Here I am “back” to back pain; limping and having significant pain in my upper right leg. I found out that I had been engaging in activity that I should not have been (weight lifting) and not doing enough to strengthen my core.

Now a loss of height and stiffness in my spinal joints are giving me much grief. My L4 and L5 have lost their strength due to injury, and the lower joint L3 is feeling the lack of support.

The entire point of this column is to show you the difference between seeing a physician who has no knowledge and relies on unreliable tests, and finding and seeing someone who has the essential knowledge to help you heal.

Take a look for yourself. Remember, my symptoms were lower back pain, upper right leg pain and a limp. Here is a copy of my recent MRI report, which is the only test my GP has ordered. Also, here is a copy of my personalized treatment recommendations from Professor McGill, which I use along with his book. Notice anything different between these two assessments?

This difference means everything! Why? Because one is antiseptic, hopeless and sounds like my pain was of my own doing. The other offers the reason for the pain, plus exercise and treatment options I can do to make it better.

My lapse in keeping up with the exercises necessary to protect my spine was slow and happened over time. I’m not sure that I even noticed. By the time I did, I had already irritated my compromised spine.

If I want to be free of back pain, I will always have to do protective exercises. I will always have to take care. This is of little consequence, considering that pain and disability are the alternative.

Thank you, Professor McGill for being the compassionate and skilled researcher that you are. There are so many of us in need of real help with our back injuries. I am so grateful for you and your life’s work.

Here is what I have learned. Often there is a practitioner who is knowledgeable and skilled in helping you with a complex and chronic condition. But the only way I have found these people is by accident or by word of mouth. I don’t see this changing anytime soon.

Don’t give up hope and be prepared to investigate your options!

Ann Marie Gaudon is a registered social worker and psychotherapist in the Waterloo region of Ontario, Canada with a specialty in chronic pain management.  She has been a chronic pain patient for over 30 years and works part-time as her health allows. For more information about Ann Marie's counseling services, visit her website. 

Stem Cell Discovery Could Revolutionize Spine and Cancer Care

By Pat Anson, PNN Editor

The discovery of a new type of stem cell could revolutionize the treatment of spine disorders and slow the progression of some cancers, according to a groundbreaking study published in Nature.

Researchers from Hospital for Special Surgery (HSS) and Weill Cornell Medicine say the vertebral stem cells they found in human spines appear to play a key role in spinal health and in the metastasis of cancerous tumors as they spread through the body.

“There are two big takeaway discoveries that were made here. One is that we have discovered a stem cell that forms the spine and maintains the spine throughout life. This cell makes all the other cells that mineralize the spine,” said lead investigator Matthew Greenblatt, MD, associate professor of pathology and laboratory medicine at Weill Cornell Medicine.

“The second discovery here is that we found that this stem cell drives tumors. Breast cancer is what we focused on here, but likely also prostate cancer.”

Cancer experts have long believed that tumors metastasize to other parts of the body simply through blood flow. But Greenblat and his colleagues found that vertebral stem cells essentially attract cancer cells to the spine. That could explain why some cancers are first detected in the spine after they have metastasized from the breast, prostate and lung.

“Because we found that molecular ‘come here’ signal that's made by this spine stem cell, that gives us the ability to block that signal therapeutically. And that's something we're working on to try to prevent or treat established spine metastases,” Greenblatt told PNN.

Boosting Bone Health

Researchers say their discovery could also lead to breakthroughs in spinal health, by giving physicians a way to speed up recovery from spinal injuries and slow the progression of degenerative conditions such as osteoporosis, a disease that makes bones thinner, less dense and more likely to fracture.

For example, someone with degenerative disc disease could have their vertebral stem cells harvested, reproduced in a laboratory, and then reinjected to stimulate the growth of new bone. In animal tests, human vertebral stem cells helped laboratory mice form new bones in their spines.

“We can show that they formed basically little vertebral bones when those patient cells are put into mice, which really tells us that we found the right cell. And we can work with the cell transplant and retain stability to make new bone,” said co-author Sravisht Iyer, MD, a spine surgeon at HSS.

“I think kind of figuring out how to recruit the cells or how to how to encourage them to form more bone is going to be an important area or avenue of investigation for us, as a way to help people and protect people against what is a very morbid condition for them.”

Iyer says early treatment with vertebral stem cells could help someone with osteoporosis or a spine fracture, but wouldn’t necessarily benefit patients suffering from more advanced cases of bone loss.

“By the time people are presenting to us with spine pain, they usually have some element of compressive pathology or a degree of degeneration, which will likely require some intervention, whether that's surgery or epidural injection,” Iyer said.

“Where this work I think can really help push us forward is once you get those at-risk patients, they probably will need a surgery because a lot of degeneration is asymptomatic, and by the time they get to you they probably need something, but maybe you can prevent the second, third or fourth operation or intervention.”

More research and human studies are needed before the stem cells can be used in clinical settings to improve bone health and slow the metastasis of cancer cells. But researchers are excited by what they’ve learn so far.    

“We predict this discovery will lead to the targeting of these cells to disrupt the function and ultimately reduce the spread of cancer to the spine," said Greenblatt.

FDA Recalls Abbott Stimulators for Technical Malfunction

By Pat Anson, PNN Editor

After receiving reports of dozens of injuries, the Food and Drug Administration has issued a Class I recall for two models of implantable neurostimulators due to a technical malfunction. The recall affects over 155,000 of Abbott’s Proclaim and Infinity devices, which are primarily used in spinal cord and deep brain stimulation.

Although Class I recalls are the most serious type of recall because they may result in injuries or death, patients are not being advised at this time to have the devices surgically removed. The stimulators were implanted in some patients as far back as 2015.

The malfunction occurs when the devices are temporarily turned off when a patient is having magnetic resonance imaging (MRI). There have been 186 complaints of patients being unable to turn the devices back on once the MRI ends, resulting in a loss of therapy and 73 injuries. No deaths have been reported.

In July, Abbott sent an “urgent medical device correction” letter to healthcare providers who install the devices, to clarify instructions on how to exit MRI mode.

The letter also advises providers to tell patients not to delete their device controller’s connection to Bluetooth if a malfunction occurs, and to update their systems and consult with a physician before having an MRI scan.   

ABBOTT IMAGE

Abbott estimates that only about 0.06% of the recalled devices malfunctioned, with 0.03% of them resulting in loss of therapy and additional surgery.   

The following devices are included in the recall:

Implantable neurostimulators are an invasive treatment of last resort for people with chronic back, leg or head pain. The devices are surgically implanted near the spine or brain, and emit low-level electrical impulses to block pain signals.

About 50,000 spinal cord stimulators (SCSs) are implanted annually in the U.S. and their use is growing – in part because of the belief they’ll reduce the need for opioids and other pain therapies. A recent study found that many patients with stimulators did not reduce their use of opioids, epidurals, corticosteroid injections or radiofrequency ablation; and about one in five had complications so severe the devices had to be removed or revised.

A 2018 study found that SCSs have some of the worst safety records of medical devices tracked by the FDA. An FDA review of adverse events involving stimulators found that nearly a third were reports of poor pain relief. The review also identified nearly 500 deaths linked to the devices, along with nearly 78,000 injuries and 30,000 malfunctions.

Virtual Reality Has Long-Term Benefits for Patients with Back Pain

By Pat Anson, PNN Editor

A novel treatment that combines virtual reality with cognitive behavioral therapy significantly reduced pain levels and other symptoms in patients with chronic back or neck pain, according to results of a new study presented at the annual meeting of the Congress of Neurological Surgeons.

Unlike other therapies using virtual reality (VR) – which temporarily distract people from their pain – patients in this study had long term reductions in their pain, anxiety and depression. This suggests that combining VR with cognitive behavioral therapy (CBT) induces neuroplasticity, a “rewiring” of the brain and nervous system that reduces the impact of physical and emotional trauma.    

“What we found is it actually creates new neural pathways to form, what's called neuroplastic reprogramming or neuroplastic change, and that actually creates a more resilient patient,” said co-author Gerry Stanley, MD, Chief Medical Officer of Harvard MedTech, a medical device company that offers VR therapy.

“The patient who may be thinking about their pain 22 hours a day, and their pain (level) has always been eight or nine, now thinks about their pain one or two hours a day and their pain (level) is a three or four, because the brain is no longer fixating on it. So it allows for, I don't want to say permanent distraction, it’s really neuroplastic reprogramming.”

Stanley and his colleagues enrolled 145 patients with non-operative degenerative neck or back pain in Harvard MedTech’s Vx Therapy program, which included daily virtual reality sessions for 14 weeks and weekly telephone calls with a therapist trained in CBT.  

Unlike other VR therapies, which encourage physical activity, participants sat stationary in a chair while watching and listening to prerecorded programs with a headset and earphones. The VR programs come in four categories that emphasize education, meditation, distraction or entertainment, depending on the patient’s needs and goals.

HARVARD MEDTECH IMAGE

After 14 weeks, results showed that Vx Therapy reduced pain and anxiety during sessions by an average of 33% and 46%, respectively. The duration of pain relief also increased over time, from 2.5 hours in the first weeks of treatment to 4.5 hours in the final weeks.

The study has not been peer-reviewed or published yet, but Stanley says the findings mirror what his company has learned after treating about 4,000 patients. The benefits of Vx Therapy continue long after the treatment ends, with many patients still reporting improvement after two years.  

“They're often reporting the same level of resiliency. I think a lot of it is they start getting into better sleep patterns,” he told PNN.  “And they really get good at meditation. Most people fail in meditation because of distractions. But when they're doing it in the virtual reality, they get very good at it. So they really develop some nice, I'm going to say muscle memory, even though I know it's cognitive. But they do develop a little bit of muscle memory around the meditation.”

Because Vx Therapy is done remotely, it’s available to any patient regardless of location, as long as they have a prescription. Some worker compensation insurers cover the treatment.   

Previous studies have also suggested that virtual reality therapy has long-term benefits for people with chronic back pain. A 2022 study showed that people with moderate lower back pain reported improvements in pain, function, mood and sleep six months after treatment ended.  

My Story: Riding the Merry-Go-Round of Pain Care

By Christopher Matthews, Guest Columnist

About two and a half years ago, I began to feel a tight painful knot on the side of my neck. Any movement would trigger an intense shock up the back of my skull to the top of my head. Ultrasound, MRI and X-ray scans all came back negative, so we tried anti-inflammatory medications, ice, deep tissue message, chiropractic, and some lifestyle changes.

Over the next few months, the pain began radiating to my cervical spine and intensified. No OTC pain medication was touching this pain.  It felt like a hot steak knife was lodged in my back. The constant, unbearable pain and symptoms of neuropathy seemed to indicate that some minor disc bulging in my spine may be more severe than we thought.

It took 4 months to get an appointment with a specialist in neurosurgery at a prominent hospital in Massachusetts. The surgeon looked at me for 5 minutes and ordered more tests. They found some abnormalities in my arms and legs, but the imaging didn’t warrant surgery. They recommended that I see a neurologist, which meant waiting another 5 months for an appointment.

During the interim, my primary care doctor wanted to be proactive. She was the only one taking me seriously. I did physical therapy 3 days a week and about a dozen courses of oral steroids. I was hopped up on cortisone for months. I also had a series of injections into my spine. None of it seemed to help.

I finally saw the neurologist, who ordered another MRI, which showed the bulging discs in my back were getting worse. But I was still not a candidate for surgery.

I’ve now been hospitalized 4 times due to loss of function, pain flares or passing out from pain in public places. The pain is that bad. Some days I can’t even get out bed because my knees won’t work. Some days I have close to no use of my arms, because my elbows are on fire. I’ve been getting more and more bacterial infections.          

My primary care doctor is the only one who believes my pain is real. She showed mercy and set up a pain management contract with me. We started with 5mg hydrocodone/acetaminophen 3 times a day. I had never touched an opiate before in my life. What a relief! I was so happy I could cry, just for a few hours of pain relief.  

I got a second opinion from another neurologist, who ordered more imaging and blood tests. The images came back as they have in the past, but the blood tests also showed there was severe inflammation – a possible sign of autoimmune disease. So off to rheumatology I go. 

After another 5-month wait for an appointment, the rheumatologist orders more blood tests and an in-depth panel for autoimmune disease. Eight of those tests come back elevated and 4 of them are so high they’re alarming. I think to myself, “This may be terrible news or it may be good news. Either way, I’m finally getting a diagnosis.” 

Not even close. I get all these test results sent to me in an app, with a message from the doctor saying everything “looks fine.” He suggests aspirin and ibuprofen, and that I get off the hydrocodone.  

I lost my temper at that point. How dare you insinuate I’m drug seeking! Like I didn’t try every other option first. All those needles driven into my spine, the steroids, and off-label antidepressants. The months of physical therapy, chiropractic and emotional therapy, all before finally resorting to actual pain medication. 

Some of these doctors and pharmacists with their discriminatory attitudes and actions are disgusting. If it was about the drugs, I’d drive 10 minutes into town and buy them at a fraction of the price I pay at the pharmacy.  

This whole ordeal between deductibles and loss of wages has easily cost me over $100,000. I could have done so much with that money. My wife would have her student debt paid off by now. Instead, it all goes into the for-profit healthcare system. We’re not patients, we’re profits.  

Being on opioid medication now for 2 years, I cannot function without them. Without my pain medication, I feel like someone with industrial grade tools is trying to physically remove my head from my neck. 

CVS is a nightmare and the other pharmacies aren’t any better. They give you that look when you walk in or call to check on a prescription: “Oh, it’s you again. We spoke last month. You’re too early. We know why you people do that.” 

Excuse me, but I’m allowed to pick up my medication the day before I am out, so that I have medication available when I wake up the next day. So that I don’t have call you at 9am when you get in and then have to wait until 3 in the afternoon to pick it up. 

For a while, CVS was taking GoodRx coupons, which cut my insurance price in half. Recently, they told me there’s a new state law that prescription coupons were no longer valid for opioids. I checked with the state and no such law exists. The pharmacist does have the right to turn coupons away, but they flat out lied to me and said it was someone else making them do it.   

The number of days I’ve gone into withdrawal with brutal pain I wouldn’t wish on my worst enemy. All because CVS can’t find the prior authorization or they don’t tell me they are out of stock until I’m at the window to pick it up. Or some other excuse they can drum up. Just so they don’t have to give this “junkie” his drugs. It’s sickening.   

Now, all of a sudden, I can’t get hydrocodone of any dosage at any pharmacy within 50 miles of me. And none of them know when it’ll be back in stock. I found one pharmacy that had a three-week supply of hydrocodone, but by the time I got it called in and got there they said they only had two weeks supply for me because another patient needed a week.  

I’m officially up shirts creek without a paddle and don’t know what to do. I’m in the most pain I’ve ever felt in my life. It is 24/7 and unrelenting. It’s destroying my life, my marriage, my chance at children, my business, and my finances. I get sent from one specialist to another, and at each stop on the merry-go-round they extract $5 to $10 thousand from me in out-of-pocket tests.   

I’m not sure how much longer I can take it.  

Christopher Matthews is a pseudonym for the author, who asked that his full name not be used. He is 35 years old and played 3 years of professional soccer after graduating from college.

Do you have a “My Story” to share? Pain News Network invites other readers to share their experiences about living with pain and treating it.

Send your stories to editor@painnewsnetwork.org.

FDA Expands Use of Spinal Cord Stimulators to More Types of Back Pain

By Pat Anson, PNN Editor

The U.S. Food and Drug Administration continues to expand the use of spinal cord stimulators, despite a growing body of research that questions the safety and effectiveness of the devices.

This month the FDA approved the use of Abbott’s spinal cord stimulators for the treatment of chronic back pain in people who are unable to get corrective surgery – known as non-surgical back pain -- because they are too medically frail or have numerous degenerative disc problems. Those patients are usually treated with pain medication, physical therapy or spinal injections.

FDA approval was granted after a clinical study showed that SCS devices equipped with Abbott's BurstDR technology provided significant pain relief, better physical function, and improved quality of life in 200 patients with non-surgical back pain. The devices are surgically placed near the spine and emit mild electrical impulses to disrupt pain signals before they reach the brain. 

Participants in the study had chronic and disabling back pain for an average of nearly 13 years before getting the devices.

"We have struggled with how to treat people who weren't considered a good surgical candidate because we didn't have clear, data-driven treatment options for non-surgical back pain," Timothy Deer, MD, CEO of the Spine and Nerve Centers of the Virginias, said in an Abbott press release. "This new indication for Abbott's SCS devices, together with BurstDR stimulation, allows physicians the ability to identify and treat a new group of people, providing them with relief from chronic back pain."

BurstDR stimulation uses mild electrical pulses — or bursts — without creating an uncomfortable tingling sensation in the spine known as paresthesia.  All of Abbott's SCS devices use BurstDR technology.

Nine out of ten patients who received BurstDR therapy experienced significantly better function or pain relief, with pain levels reduced an average of nearly 70 percent. The improvements were sustained 12 months after the devices were implanted.

"This FDA expanded indication approval for our SCS devices is a significant step forward in Abbott's goal to provide treatment access to those who suffer daily with chronic back pain but are not eligible for corrective surgery," said Pedro Malha, vice president of neuromodulation for Abbott.

SCS devices were long considered a treatment of last resort for people with severe back, neck and leg pain, but in recent years the FDA has expanded use of the devices for conditions such as painful diabetic neuropathy. The devices are often promoted as safer alternatives than opioid pain medication.

Recent research, however, has raised questions about the safety, efficacy and long-term benefits of the devices. A recent Cochrane review concluded the stimulators work no better than a placebo for treating chronic low back pain, and provide little or no improvement in quality of life.  In a review of 13 clinical trials, researchers found little clinical data on the long-term effectiveness of SCSs, and noted that most of the studies lasted less than a month, were poorly blinded, or funded by device makers.

A 2018 study by investigative journalists found that SCSs have some of the worst safety records of medical devices tracked by the FDA.

A 2020 FDA review of adverse events involving stimulators found that nearly a third were reports of unsatisfactory pain relief. Other common adverse events are nerve damage, infections, and device malfunctions that may lead to further surgeries.

A 2022 study found that patients who get the devices did not reduce their use of opioids, and continued getting medical procedures such as injections, epidurals and radiofrequency ablation.

Surgery for Sciatica Has No Long-Term Benefit

By Pat Anson, PNN Editor

A surgical procedure called a discectomy is usually considered the treatment of last resort for people with leg pain from sciatica. Most medical guidelines only recommend a discectomy when exercise, pain medication and epidural steroid injections don’t work or provide minimal relief.

But in a meta-analysis (a study of studies) published in The BMJ, an international team of researchers found little evidence that discectomies reduce leg pain and disability. And even when they do, researchers say the benefits are usually short-lived.

Sciatica is a common condition that occurs when a herniated or slipped disk puts pressure on the lumbar nerve, causing pain, numbness and inflammation. The pain is felt on the sciatic nerve, running from the lower back down to the legs. Sciatica usually responds to non-surgical treatment, but in about 20% of cases, the pain will persist for a year or more.

Researchers looked at 24 clinical trials that looked at the effectiveness of discectomy and found “very low to low certainty evidence” that the procedure was superior to steroid injections and non-surgical treatment. Pain relief was moderate at best over the short term, and negligible after 12 months. There was also little evidence that discectomies reduce disability.

Despite those findings, researchers concluded that a discectomy might still be an early option for people with severe sciatica pain who need rapid relief. A discectomy relieves pressure on the lumbar nerve by removing a portion of the damaged disk.

“These findings challenge the notion that non-surgical treatment should always be the first line treatment for sciatica. In people with sciatica who regard rapid pain relief as an important treatment goal, and who feel that the benefits of discectomy outweigh the risks and costs, discectomy could be an early management option,” wrote lead author Chang Liu, PhD, a Research Fellow at the University of New South Wales in Sydney, Australia.

“As a result of the treatment’s invasive nature and the substantial costs of surgery, we would encourage
clinicians to discuss with their patients that discectomy can provide rapid relief of leg pain, but that
non-surgical treatment can achieve similar results, although at a slower pace and with a potential chance
of requiring delayed surgery if they do not respond to non-surgical treatment.”

Liu and his colleagues found the risk of an adverse event from surgery, such as an infection, further disk herniation or post-operative pain, was similar between a discectomy and non-surgical treatment.

But in an editorial also published in The BMJ, researchers at the University of Oxford challenged Liu’s suggestion that an early discectomy might be appropriate for people who have not explored other treatment options. Most people with sciatica recover on their own, they said, without the risks of surgery.

“In primary care, about two thirds of people with sciatica recover within two to three months without the need or even an indication for invasive treatments. Therefore, extrapolation of Liu and colleagues’ findings to a primary care population would be misleading,” said lead author Annina Schmid, PhD, an Associate Professor at Oxford Neuroscience.

“Their conclusions should be limited to people with a specific diagnosis of radicular pain with or without radiculopathy, who have likely not responded adequately to non-surgical approaches, or to people with severe pain and a large enough impact on quality of life to warrant secondary care referral.”

Schmid and her co-authors say the new research highlights one of the problems in treating sciatica – it’s a complex condition influenced by individual factors, and no treatment will consistently have the same results for patients.

Study Finds Spinal Cord Stimulation Has No Benefit for Back Pain

By Pat Anson, PNN Editor

A scathing new Cochrane review is raising more questions about the safety, efficacy and long-term benefits of spinal cord stimulators, medical devices that are increasingly used to treat chronic back pain.  

Cochrane reviews are considered the gold standard in medical research because they use robust methodology to gather good quality evidence and reduce the impact of biased, poor-quality studies.

The review by Australian researchers concluded that spinal cord stimulation (SCS) works no better than a placebo for treating chronic low back pain, and provides little to no benefit in improving quality of life.

The devices are surgically placed near the spine and connected to batteries implanted under the skin, which send electrical impulses into the spine to mask pain.

“Spinal cord stimulation is invasive and has a great financial cost to people who choose surgery as a last resort to alleviate their pain. Our review found that the long-term benefits and harms are essentially unknown,” said lead author Adrian Traeger, PhD, a Research Fellow at the Institute for Musculoskeletal Health at the University of Sydney. “Our review of the clinical data suggests no sustained benefits to the surgery outweigh the costs and risks.”

Treager and his colleagues analyzed the results of 13 clinical trials of SCS devices, looking at data from almost 700 patients with low back pain. They found little to no clinical data on the long-term effectiveness of SCS because most of the studies lasted less than a month, were poorly blinded, or had selective reporting bias.

The researchers also found that side effects from SCS surgery were poorly documented, preventing them from assessing the level of risk involved. Serious adverse events include nerve damage, infection, and the devices’ electrical leads moving, all of which may lead to more surgeries.

“Data in this review do not support the use of SCS to manage low back pain outside a clinical trial. Current evidence suggests SCS probably does not have sustained clinical benefits that would outweigh the costs and risks of this surgical intervention,” they concluded. 

Findings from the Cochrane review have been submitted to Australia’s Department of Health and Aged Care, which is reviewing the effectiveness of spinal cord stimulators. The devices' long-term safety and performance are also being re-assessed by Australia's Therapeutic Goods Administration (TGA).

“Our review found that the clinical benefit of adding spinal cord stimulation to treat low back pain remains unknown. When coupled with the reality that these devices are very expensive and often break down there is clearly a problem here that should be of concern to regulators,” said Chris Maher, PhD, Co-Director of Sydney Musculoskeletal Health.

Increasing Use of Stimulators

About 50,000 spinal cord stimulators are implanted annually in the U.S. and their use is growing. The devices are no longer limited to patients with back, neck and leg pain. In 2021, the FDA expanded the use of SCS to treat chronic pain from diabetic neuropathy. Stimulators are also being used on patients with Complex Regional Pain Syndrome (CRPS).

A 2018 study by investigative journalists found that SCSs have some of the worst safety records of medical devices tracked by the FDA. A 2020 FDA review of adverse events involving stimulators found that nearly a third were reports of unsatisfactory pain relief. A more recent study found that patients with the devices did not reduce their use of opioids, and continued getting procedures such as epidurals, corticosteroid injections and radiofrequency ablation.

Although evidence is growing that questions the safety and effectiveness of SCS, medical device companies continue to roll out new stimulators with more advanced technology. This week Nevro said it would release the first SCS system in the U.S. that uses artificial intelligence to optimize pain relief for each patient. The HFX iQ SCS system is designed for patients with diabetic neuropathy or chronic back and leg pain.

"This is an exciting time in spinal cord stimulation -- better waveforms, more conditions we can treat, and a massive treasure trove of patient data," said Usman Latif, MD, an interventional pain specialist and consultant to Nevro.

“What if we could take all the programming experience and clinical outcomes of tens of thousands of patients across the country, including what programs worked and what didn't, and bring the power of all that knowledge into the palm of our patient's hand -- with them 24/7, monitoring them, and offering them the best program for their exact situation with a tap on the screen. HFX iQ is the future of medicine, where expanded data holds the promise of new capabilities and improved care."

In addition to the U.S. release of HFX iQ, Nevro has asked for approval from regulators in Europe and Australia.

Injection of Donor Cells Gives Long-Term Relief from Degenerative Disc Disease

By Pat Anson, PNN Editor

A single injection of cells and fluid derived from human donor tissue was successful long-term in relieving pain and restoring physical function in patients with degenerative disc disease, according to new research presented at the annual meeting of the Society of Interventional Radiology in Phoenix.

The injections, known as viable disc allograft supplementation, encourage cells in damaged discs to regenerate with healthy tissue. Degenerative disc disease is one of the leading causes of chronic lower back pain.

“The significant improvement in pain and function is promising for patients living with chronic low back pain – a condition that can greatly impact a person’s quality of life,” said lead author Douglas Beall, MD, chief of radiology at Clinical Radiology of Oklahoma. “Back pain is the leading cause of limited activity and workplace absenteeism. This treatment may help patients return to a normal activity level for a longer period time.”

Fifty patients participated in the VAST trial, with 46 patients receiving allograft treatment and four receiving saline injections as a placebo. VIVEX Biologics, a regenerative medicine company that processes donated cells and tissue to treat musculoskeletal injuries, wounds and burns, sponsored the study.

After three years, 60 percent of patients who received allograft treatment reported more than 50% improvement in pain and 70% had significant improvement in their function scores. No patients suffered adverse effects.

In healthy patients, discs cushion the spine’s vertebrae, facilitating movement and flexibility. But discs can wear out over time and cause the bones of the spine to rub together and pinch nerves, causing pain and disability. By age 60, most people have at least some disc degeneration.

“Existing treatment for chronic low back pain due to degenerative disc disease is often ineffective or the effects are short-lived,” said Beall, who is a medical consultant for VIVEX. “We need better treatments for this condition since conservative care is not providing the long-term outcomes that patients deserve. Injectable allograft treatment might be the answer for many people.”

Beall says allograft injections could decrease the use of pain medication by patients with chronic lower back pain. The treatment requires no incisions and patients are able to go home on the same day.

Other companies are also developing new injections to treat degenerative disc disease. In clinical trials, Australia-based Mesoblast says injections of its proprietary stem cell product provided long-term relief for people with lower back pain caused by disc disease. The company recently announced the FDA designated its stem cell injection as a Regenerative Medicine Advanced Therapy, which is designed to help speed up its development.   

Injections of an experimental gel developed by ReGelTec also show promise as a treatment for disc disease. The hydrogel is heated before injection to more easily fill cracks and tears in the affected discs. When the gel cools and hardens, it helps restore the disc’s structural integrity.   

7 Questions Seniors Should Ask Before Major Surgery

By Judith Graham, Kaiser Health News

Larry McMahon, who turns 80 this month, is weighing whether to undergo a major surgery. Over the past five years, his back pain has intensified. Physical therapy, muscle relaxants, and injections aren’t offering relief.

“It’s a pain that leaves me hardly able to do anything,” he said.

Should McMahon, a retired Virginia state trooper who now lives in Southport, North Carolina, try spinal fusion surgery, a procedure that can take up to six hours? (Eight years ago, he had a lumbar laminectomy, another arduous back surgery.)

“Will I recover in six months — or in a couple of years? Is it safe for a man of my age with various health issues to be put to sleep for a long period of time?” McMahon asked, relaying some of his concerns to me in a phone conversation.

Older adults contemplating major surgery often aren’t sure whether to proceed. In many cases, surgery can be lifesaving or improve a senior’s quality of life. But advanced age puts people at greater risk of unwanted outcomes, including difficulty with daily activities, extended hospitalizations, problems moving around, and the loss of independence.

I wrote in November about a new study that shed light on some risks seniors face when having invasive procedures. But readers wanted to know more. How does one determine if potential benefits from major surgery are worth the risks? And what questions should older adults ask as they try to figure this out? I asked several experts for their recommendations. Here’s some of what they suggested.

1) What’s the goal of this surgery?

Ask your surgeon, “How is this surgery going to make things better for me?” said Margaret “Gretchen” Schwarze, an associate professor of surgery at the University of Wisconsin School of Medicine and Public Health.

Will it extend your life by removing a fast-growing tumor? Will your quality of life improve by making it easier to walk? Will it prevent you from becoming disabled, akin to a hip replacement?

If your surgeon says, “We need to remove this growth or clear this blockage,” ask what impact that will have on your daily life. Just because an abnormality such as a hernia has been found doesn’t mean it has to be addressed, especially if you don’t have bothersome symptoms and the procedure comes with complications, said Drs. Robert Becher and Thomas Gill of Yale University, authors of that recent paper on major surgery in older adults.

2) If things go well, what can I expect?

Schwarze, a vascular surgeon, often cares for patients with abdominal aortic aneurysms, an enlargement in a major blood vessel that can be life-threatening if it bursts.

Here’s how she describes a “best case” surgical scenario for that condition: “Surgery will be about four to five hours. When it’s over, you’ll be in the ICU with a breathing tube overnight for a day or two. Then, you’ll be in the hospital for another week or so. Afterwards, you’ll probably have to go to rehab to get your strength back, but I think you can get back home in three to four weeks, and it’ll probably take you two to three months to feel like you did before surgery.”

Among other things people might ask their surgeon, according to a patient brochure Schwarze’s team has created: What will my daily life look like right after surgery? Three months later? One year later? Will I need help, and for how long? Will tubes or drains be inserted?

3) If things don’t go well, what can I expect?

A worst case scenario might look like this, according to Schwarze: “You have surgery, and you go to the ICU, and you have serious complications. You have a heart attack. Three weeks after surgery, you’re still in the ICU with a breathing tube, and you’ve lost most of your strength, and there’s no chance of ever getting home again. Or, the surgery didn’t work, and still you’ve gone through all this.”

“People often think I’ll just die on the operating table if things go wrong,” said Dr. Emily Finlayson, director of the UCSF Center for Surgery in Older Adults in San Francisco. “But we’re very good at rescuing people, and we can keep you alive for a long time. The reality is, there can be a lot of pain and suffering and interventions like feeding tubes and ventilators if things don’t go the way we hope.”

4) Given my health, age and functional status, what’s the most likely outcome?

Once your surgeon has walked you through various scenarios, ask, “Do I really need to have this surgery, in your opinion?” and “What outcomes do you think are most likely for me?” Finlayson advised.

Research suggests that older adults who are frail, have cognitive impairment, or other serious conditions such as heart disease have worse experiences with major surgery. Also, seniors in their 80s and 90s are at higher risk of things going wrong.

“It’s important to have family or friends in the room for these conversations with high-risk patients,” Finlayson said. Many seniors have some level of cognitive difficulties and may need assistance working through complex decisions.

5) What are the alternatives?

Make sure your physician tells you what the nonsurgical options are, Finlayson said. Older men with prostate cancer, for instance, might want to consider “watchful waiting,” ongoing monitoring of their symptoms, rather than risk invasive surgery. Women in their 80s who develop a small breast cancer may opt to leave it alone if removing it poses a risk, given other health factors.

Because of Larry McMahon’s age and underlying medical issues (a 2021 knee replacement that hasn’t healed, arthritis, high blood pressure), his neurosurgeon suggested he explore other interventions, including more injections and physical therapy, before surgery. “He told me, ‘I make my money from surgery, but that’s a last resort,” McMahon said.

6) What can I do to prepare myself?

“Preparing for surgery is really vital for older adults: If patients do a few things that doctors recommend — stop smoking, lose weight, walk more, eat better — they can decrease the likelihood of complications and the number of days spent in the hospital,” said Dr. Sandhya Lagoo-Deenadayalan, a leader in Duke University Medical Center’s Perioperative Optimization of Senior Health program.

When older patients are recommended to POSH, they receive a comprehensive evaluation of their medications, nutritional status, mobility, preexisting conditions, ability to perform daily activities, and support at home. They leave with a “to-do” list of recommended actions, usually starting several weeks before surgery.

If your hospital doesn’t have a program of this kind, ask your physician, “How can I get my body and mind ready” before having surgery, Finlayson said. Also ask: “How can I prepare my home in advance to anticipate what I’ll need during recovery?”

7) What will recovery look like?

There are three levels to consider: What will recovery in the hospital entail? Will you be transferred to a facility for rehabilitation? And what will recovery be like at home?

Ask how long you’re likely to stay in the hospital. Will you have pain, or aftereffects from the anesthesia? Preserving cognition is a concern, and you might want to ask your anesthesiologist what you can do to maintain cognitive functioning following surgery. If you go to a rehab center, you’ll want to know what kind of therapy you’ll need and whether you can expect to return to your baseline level of functioning.

During the covid-19 pandemic, “a lot of older adults have opted to go home instead of to rehab, and it’s really important to make sure they have appropriate support,” said Dr. Rachelle Bernacki, director of care transformation and postoperative services at the Center for Geriatric Surgery at Brigham and Women’s Hospital in Boston.

For some older adults, a loss of independence after surgery may be permanent. Be sure to inquire what your options are should that occur.

Kaiser Health News is a national newsroom that produces in-depth journalism about health issues.

Blacks and Hispanics More Likely to Develop Chronic Back Pain  

By Pat Anson, PNN Editor

Chronic lower back pain is the leading cause of disability worldwide, with an estimated 72 million people suffering from it in the United States alone.   

New research suggests that Black and Hispanic Americans are significantly more likely to develop “high-impact” lower back pain than Whites. High impact pain is chronic pain that lasts at least six months and is severe enough to interfere with daily life or work activities.

Researchers at Boston Medical Center analyzed health data for over 9,000 patients experiencing acute lower back pain, who were being treated at primary care practices in the Baltimore, Boston, Pittsburgh and Salt Lake City areas.

After six months, patients who were Black (30%) or Hispanic (25%) were more likely than White patients (15%) to develop high impact chronic lower back pain. The Black and Hispanic patients were more likely to be younger, female, obese, have Medicaid insurance, and at higher risk of disability. They were also about half as likely to be prescribed opioids than Whites after their initial visit to a doctor.

“Our study has highlighted both a concern in the absolute number of patients with acute low back pain who develop chronic low back pain and concerns about racial and ethnic disparities in outcomes,” said lead author Eric Roseen, DC, director of the Program for Integrative Medicine and Health Disparities at Boston Medical Center.

“High-impact chronic pain has a negative impact on the lives of millions of Americans, particularly Black Americans, yet possible and significant causes of racial and ethnic disparities in long-term pain outcomes remain understudied and largely unaddressed. The disparities that emerged in this study shed light on the direct correlation among lived experiences, physical, and mental health, which must be addressed in order to improve patient outcomes.”

Roseen and his colleagues reported in the journal Pain Medicine that the risk of developing high-impact chronic pain was highest among Black women. They attribute that partially to socioeconomic reasons, suggesting that racial and ethnic differences in health insurance or neighborhood resources may impact the long-term outcomes of patients with new episodes of low back pain. 

Getting effective treatment for low back pain is problematic, regardless of race or ethnic group. A recent Harris Poll of over 5,000 U.S. adults found that over a third of those with chronic low back pain have never been told by a healthcare professional what causes their pain. Nearly half said they’ve experienced back pain for at least five years.

The survey found the typical back pain sufferer had sought relief from at least three different healthcare providers. About one in five had epidural steroid injections, which were rated as one of the least effective treatments for chronic low back pain. Opioid pain medication was rated as the most effective treatment, slightly ahead of physical therapy, chiropractic care and acupuncture.

FDA Approves Smallest Rechargeable Spinal Cord Stimulator

By Pat Anson, PNN Editor

The Food and Drug Administration has approved a new spinal cord stimulator that’s being touted as the smallest implantable neuromodulation device of its kind on the market. Abbott’s Eterna stimulator can also be recharged wirelessly as few as five times a year, unlike other stimulators that need recharging daily or weekly.

Spinal cord stimulators (SCSs) are an invasive treatment of last resort for people with chronic back or leg pain. The devices are surgically implanted near the spine and connected to batteries placed under the skin. The implants send low-level electrical impulses into the spine to block pain signals.

Abbott says it developed Eterna after extensive studies with pain patients and healthcare providers, who wanted a smaller implant with less need for recharging.

Eterna utilizes the company’s BurstDR stimulation, which mimics the natural firing patterns of nerves to provide pain relief without the tingling sensation of other simulators.

"Abbott's low-dose BurstDR stimulation is clinically proven to reduce pain, improve people's ability to perform everyday activities, and reduce emotional suffering associated with pain," Timothy Deer, MD, president and CEO of the Spine and Nerve Centers of the Virginias, said in a statement provided by Abbott.

ABBOTT IMAGE

"Until now, it wasn't available on a rechargeable device that was this small, and that only needs to be charged a few times a year. This makes a big difference in comfort for many patients who now can have access to the best of both worlds – a small, best-in-class rechargeable device with superior stimulation therapy."

Another advantage of the Eterna SCS system is that patients with the device can still have full-body MRI scans – a critical need for those who need access advanced imaging and diagnostics. The devices can also been monitored and programmed with a mobile app.

About 50,000 SCSs are implanted annually in the U.S. and their use is growing – in part because of the belief they’ll reduce the need for opioids and other pain therapies.

A recent study found that premise to be untrue. Researchers at the University of California San Francisco School of Medicine found that pain patients with stimulators did not reduce their use of opioids, epidurals, corticosteroid injections or radiofrequency ablation compared to a control group. About a fifth of the patients experienced complications so severe the devices had to be removed or revised.

A 2018 study found that SCSs have some of the worst safety records of medical devices tracked by the FDA. An FDA review of adverse events involving stimulators found that nearly a third were reports of poor pain relief. The review also identified nearly 500 deaths linked to the devices, along with nearly 78,000 injuries and 30,000 malfunctions.

SCS’s are no longer limited to patients with intractable back and neck pain. Last year the FDA expanded the use of stimulators to include lower limb pain from diabetic neuropathy.  Stimulators are also being used on patients with Complex Regional Pain Syndrome (CRPS).

4 Oldies But Goodies That Relieve Back Pain

By Dr. Forest Tennant, PNN Columnist 

In our studies, we routinely review persons with adhesive arachnoiditis (AA), Ehlers-Danlos Syndrome, Tarlov cysts and Epstein Barr autoimmunity. Our bulletins have, for the last two years, focused on new discoveries such as autoimmunity, medicinal agents, spinal fluid flow exercises, MRIs and laboratory testing.  

It’s a little embarrassing, but we haven’t sufficiently emphasized that some older treatments can still bring a lot of relief.  

AA causes considerable imbalance and unusual stretches to the muscles, tendons, nerves, and joints in the back, hips and pelvis. Consequently, these tissues become sprained, strained and inflamed. Many “old-time” measures can heal these tissues and enhance comfort and mobility. Here is a short summary of four that will be around for a long time since they simply provide comfort and relief. 

  1. Ultrasound: Several years ago, we started using ultrasound for AA. The theory is that it may break up adhesions. While this may or may not happen, ultrasound often provides immediate relief that can last days or weeks. Medications such as cortisone cream can also be administered during ultrasound, which boosts their effectiveness. There are now hand-held ultrasound devices that can be purchased for use at home. 

  2. Epsom Salts: Foot baths with minerals are convenient and soothing. Epsom salt baths are generally believed to “pull out” or detoxify the body of excess electricity and toxins. They can be most helpful for burning feet sensations and stabbing pains in the legs. 

  3. Heating Pad: Heat dilates blood vessels, which brings more oxygen to the treated area and promotes healing. Heat also relaxes muscles that may be in spasm. 

  4. Transcutaneous Electrical Nerve Stimulation (TENS): Electrical currents act as an anesthetic on nerves and nerve roots. Pain in persons with AA may temporarily abate when an electric current is administered over the lower back. TENS can often break a flare.

The human body has remained unchanged for thousands of years. Remedies and treatments discovered long ago may still be applicable today. AA has many associated conditions including spinal fluid leaks, inflammation in tissues around the spine, muscle spasm, and radiating pain among others. Some “old-time” treatments may be a welcome adjunct to the 3-component medical protocols.

Forest Tennant, MD, DrPH, is retired from clinical practice but continues his research on the treatment of intractable pain and arachnoiditis. This column is adapted from an updated bulletin recently issued by the Arachnoiditis Research and Education Project. Readers interested in subscribing to the bulletins should click here.

The Tennant Foundation gives financial support to Pain News Network and sponsors PNN’s Patient Resources section.