Are MRIs sending people to back surgery who don’t need it?

There is thinking in the medical community that if you want to avoid a back surgery, do not get an MRI. This is not a new thought, the controversies surrounding MRI interpretation sending people to a back surgery that they did not need has been going on for years. BUT, the patients think they need back pain surgery to get back pain relief.

“Lumbar spine diagnostic imaging reports may cause patient and clinician concern when clinically unimportant findings are not explicitly described as benign.”

New research (1) says: “Lumbar spine diagnostic imaging reports may cause patient and clinician concern when clinically unimportant findings are not explicitly described as benign.” In this March 2024 study, the authors found that while lumbar spine X-Ray, CT and MRI reports describe a large number of findings overall and while most were judged to be of unlikely clinical relevance, less than a fifth were explicitly reported to be benign. They note that previous studies have indicated that many commonly reported, likely clinically unimportant findings, such as disc bulge and disc or facet joint degeneration, are likely to be misconstrued by patients. “An online survey designed to elicit consumer understanding of terms commonly used in lumbar spine imaging reports found these terms were deemed to be serious and likely to make the majority of respondents concerned about persistence of pain.”

Therefore, Are MRIs sending people to back surgery who don’t need it?

A paper looked at the papers that spinal surgeons and specialist were accessing – the top paper was about magnetic resonance imaging (MRI) findings in individuals without back pain

Why do we see so many failed back surgery patients? Because lower back pain is one of the most difficult complaints to accurately diagnose and treat. The reason for the insurance diagnosis code of “Failed Back Surgery Syndrome” is that so many back surgeries fail. Let’s go back almost ten years ago to see that the problem of MRI diagnosing and sending people to surgery they may not have needed was a problem then too.

In 2015, Doctors analyzed the most frequently cited papers in lumbar spine surgery and measured their impact on the entire lumbar spine literature. In other words, what were the surgeons researching? Here is what they found: The most cited paper was “the classic paper” from 1990 that described magnetic resonance imaging (MRI) findings in individuals without back pain, sciatica, and neurogenic claudication (impairment), showing that spinal stenosis and herniated discs can be incidentally found when scanning patients. (2) The surgeons kept referring back to a 1990 paper asking why people with no pain have bad MRIs.

In 2020, doctors again analyzed the most frequently cited papers in lumbar spine surgery and measured their impact on the entire lumbar spine literature. Here is what they found: The most cited paper was “the classic paper” from 1990 that described magnetic resonance imaging (MRI) findings in individuals without back pain, sciatica, and neurogenic claudication (impairment), showing that spinal stenosis and herniated discs can be incidentally found when scanning patients. (3)

The word “incidental” meant that the patient had no pain, but they had the MRI that showed something bad. As before, the purpose of the paper was to examine why people with no back pain show abnormalities on MRI. More than a quarter of a century later, doctors are still citing the paper and asking the same question: “Why does this patient have clear problems on MRI but no back pain?” And the secondary question: “Should we send this patient to surgery?”

There are many structures in the lower back that can cause severe pain. Not all are clear on an MRI

There are many structures in the lower back that can cause severe pain. These include muscles, ligaments, tendons, bones, joints and discs. For example, the outer rim of the disc can be a significant source of back pain due to its rich nerve supply and tendency toward injury. There is a great deal of overlap of nerve supply to all these structures. This makes it nearly impossible for the brain to distinguish between injury to one structure versus another.

For example, a torn or herniated disc can feel identical or similar to a bruised muscle or ligament injury. This is where an examination into the cause of the pain is important.

A considerable number of patients may be classified incorrectly by MRI for lumbar disc herniation and lumbar spinal stenosis

Research has shown that magnetic resonance imaging (MRI) for back pain remains controversial because a considerable number of patients may be classified incorrectly by MRI for lumbar disc herniation and lumbar spinal stenosis. These studies suggests that MRI may not be pointing to the correct cause of traditionally attributed back pain–herniated disc and spinal stenosis. Further, there is more confusion being created because the medical research does not agree. Here is why a physical examination should be considered a main diagnostic tool.

As with other joint problems, I will often get emails that are simply an MRI report. The MRI tells me that the person has a disc herniation at L1 or L2 or L4 or L5. Then the report will describe varying degrees of degenerative disc disease. The email will end with “can you help?” That answer would be easier if there was some more information included in that email.

At no point in the email did the person say how bad their pain was, what type of limitations they had, or how their back problem was affecting their ability to work or be active. Information as simple as knowing how someone’s back feels today is good information to have when trying to determine if our treatments can help them instead of surgery.

I often see patients who have severe back pain and show me an MRI, X-ray, and/or scan that was inconclusive.

I often see patients who have severe and chronic back pain and show me an MRI, X-ray, and/or scan that was inconclusive. For instance, a patient can have muscle spasm from a simple back strain, which can cause excruciating pain and may limit the ability to walk or even stand. Conversely, a large herniated disc may be completely painless. Yet the patient with the large herniated disc may be sent to surgery because they had an MRI for something else.

The second most cited study similarly showed that patients who had no symptoms of back pain who underwent lumbar spine magnetic resonance imaging frequently had lumbar degeneration and disease.(4)

From the study a direct quote: “The results suggest that a considerable proportion of patients may be classified incorrectly by MRI for herniated disc and spinal stenosis. However, the evidence for the diagnostic accuracy of MRI found by this review is not conclusive. . . “

In our practice we often see patients who have severe back pain and carry with them an MRI, X-ray and/or scan that are inconclusive. Doctors writing in the European Journal of Pain agree and say while controversial, research supporting MRI use do not permit definite conclusions.(5) This supports recent findings that say despite doctors frequently requesting MRIs for the lumbar spine, sometimes for weak or various reasons, that imaging performs poorly and it is not likely to identify the anatomical structures that are the source of pain.(7)

Research: some surgeries and MRIs are “unjustified and wasteful healthcare expenditures.”

The problem of over reliance on MRI is that they can send you to a surgery you may not need. As noted in the above study, the MRI reading itself can cause catastrophizing thoughts deep enough to send a patient to surgery. A study that appeared in the medical journal Radiologia (Radiology) (7) examined the traditional recommendations of sending a patient to get an MRI and then offering a surgery based on what the MRI indicated. The researchers had concerns about the enthusiasm some surgeons had for surgery that was likely inappropriate.

This is from the study:

  • “In the last 25 years, scientific research has brought about drastic changes in the concept of low back pain and its management. Most imaging findings, including degenerative changes, reflect anatomic peculiarities or the normal aging process and turn out to be clinically irrelevant; imaging tests have proven useful only when systemic disease is suspected or when surgery is indicated for persistent spinal cord or nerve root compression. The radiologic report should indicate the key points of nerve compression, bypassing inconsequential findings.
  • Many treatments have proven inefficacious, and some have proven counterproductive, but they continue to be prescribed because patients want them and there are financial incentives for doing them. Following the guidelines that have proven effective for clinical management improves clinical outcomes, reduces iatrogenic complications, and decreases unjustified and wasteful healthcare expenditures.”

One of the concerns noted in this study was iatrogenic complications, pain and complication caused by the surgery itself.

“diagnostic imaging still tends to guide medical management of low back pain and to be inappropriately prescribed in more than 50% of cases.”

A 2017 study (8) suggested that 50% of spinal MRIs are ordered inappropriately. Here is the research: “Low back pain is the most common type of pain reported by adults and is one of the most common reasons for consulting a physician. Pathoanatomical diagnosis of low back pain is often challenging to establish. Even with recent imaging developments, establishing a specific etiology remains merely difficult in most cases of low back pain, as radiological findings often lack correlation with pathoanatomical findings and clinical symptoms. Nevertheless, diagnostic imaging still tends to guide medical management of LBP and to be inappropriately prescribed in more than 50% of cases.”

Disc degeneration is not a sufficient diagnosis for pain development, as evidenced by large numbers of asymptomatic patients with abnormal findings on MRI or CT.

Below is research that appeared in the Annals of the New York Academy of Sciences: (9) What it outlines is that a lot of people who have back pain and a lot of people who do not have back pain have degenerative disc diseases on their MRIs.

Summary findings:

  • Chronic discogenic low back pain can be difficult to diagnose and treat. Numerous imaging studies (MRIs and Scans) have attempted to determine a definitive association between Intervertebral disc degeneration (Degenerative disc disease) and low back pain.
  • Degenerative disc disease is strongly associated with low back pain, and degenerative disc disease is the most common diagnosis in back pain patients. – However, disc degeneration is not a sufficient diagnosis for pain development, as evidenced by large numbers of asymptomatic patients with abnormal findings on MRI or CT.
  • Using MRI, Intervertebral disc herniations are seen in 22–67% of asymptomatic adults and spinal stenosis in 21% of asymptomatic adults over 60, and CT evidence of spinal facet joint osteoarthritis was shown to have no correlation with low back pain.
  • Abnormal findings on MRI scans were not predictive of the development or duration of low back pain.
  • Thus, spine pathology can be observed in the absence of low back pain and should not be used as a proxy for low back pain in research.

The summary here is that not only is an MRI showing degenerative disc disease that may or may not be causing the patient’s back pain. But the MRI is also being used to recommend a surgery that will probably not be effective for the patient’s problem.

  • “Not only is Intervertebral disc degeneration seen on imaging studies not indicative of low back pain, but patients with discogenic back pain are also poorly indicated for surgery.”
  • “Given the difficulties in determining who will benefit from surgery, the American College of Physicians recently updated their LBP treatment guidelines, recommending noninvasive, nonpharmacologic treatments as the first line of therapy.”

More than 85% of patients seen at primary care practices have low back pain that cannot be attributed to a specific disease or an anatomic abnormality

  • Published in the Archives of internal medicine.doctors from University of Connecticut Health Center write: “More than 85% of patients seen at primary care practices have low back pain that cannot be attributed to a specific disease or an anatomic abnormality and it is well known that imaging of asymptomatic patients often reveals anatomic abnormalities, such as herniated discs. One of the risks of routinely imaging uncomplicated acute low back pain is patient “labeling”; no evidence exists that labeling patients with low back pain with a specific anatomic diagnosis improves outcomes.”(10)
  • Published in the Journal of athletic training: This evidence confirms that clinicians should refrain from routine, immediate lumbar imaging in patients with nonspecific, acute or subacute lower back pain with no indications of underlying serious conditions. Specific consideration of patient expectations about the value of imaging was not addressed here; however, this aspect must be considered to avoid unnecessary MRI imaging while also meeting patient expectations and increasing patient satisfaction.”(11)
  • When doctors wrote their recent paper entitled: “Decision making in surgical treatment of chronic low back pain: the performance of prognostic tests to select patients for lumbar spinal fusion” they concluded that at present, best evidence does not support the use of any prognostic test in clinical practice in selecting patients for lumbar spinal fusion.(12)

The culture of medicine today is one that looks at diagnostic films. It is not touching the body, it is not moving the body to find where the pain is coming from. An MRI cannot tell us where the pain is coming from. We can use an MRI to substantiate examination findings but the physical examination and the patient’s history is where I can find where the pain.

Too many MRIs? Not enough MRIs? patients and doctors are confused by what is an appropriate MRIs

There was a paper published in the Journal of physiotherapy (13) that suggested that people with low back pain are centered around their desire for a diagnosis, potentially contributing to expectations for and overuse of imaging. People with low back pain expressed a strong desire for clear, consistent and personalized information on prognosis, treatment options and self-management strategies, related to healthcare and occupational issues.”

Patients wanted spinal imaging

A 2018 study (14) from Monash University in Australia wrote: “Across many different patient populations with data obtained from a variety of study designs, common themes emerged which highlighted areas of patient dissatisfaction with the medical management of low back pain, in particular, the superficial approach to care perceived by patients and concerns regarding pharmacotherapy. Patients perceive unmet needs from medical services, including the need to obtain a diagnosis, the desire for pain control and the preference for spinal imaging.” The patients in this study thought that the MRI was necessary to obtain true diagnosis and the proper treatment path.

Why would patients demand MRIs regardless of the warnings and cautions?

This is the way patients have been trained by the medical community. Patients are demanding an MRI and if the doctor does not want to order one they feel they are not getting the “best,” of care. The reason a doctor will be reluctant to order and MRI is that the MRI, as I have noted above, will “reveal” something that is not really there, a cause for surgery. We rarely order MRIs because, most patients already have one, and secondly, a physical examination should be performed first in most cases. From many patients another MRI is an unneeded expenditure.

In a study published in the Journal of Neurosurgery, Spine (15) that examined patients with back pain, investigators found that patients in fact did expect to get an MRI when they have back pain and that the MRI will reveal exactly what the cause of their pain is. Not only that but:

  • more than 50% of the patients would have a spinal surgery if their doctor told them they had an abnormal spinal MRI, even if they had no pain or restricted movement.
  • A large proportion of patients (33%) believed that back surgery was more effective than physical therapy in the treatment of back pain without leg pain.
  • Nearly one-fifth of the survey group (17%) also believed that back injections were riskier than back surgery.
  • CONCLUSION: “Patients overemphasize the value of radiological studies and have mixed perceptions of the relative risk and effectiveness of surgical intervention compared with more conservative management. These misconceptions have the potential to alter patient expectations and decrease satisfaction, which could negatively impact patient outcomes and subjective valuations of physician performance.”

For some people the MRI of their back pain has terrified them.

It is not the emailers fault for excluding this information. For some people, they have been trained that the MRI has captured the image of what is causing their pain and this image can be used as a roadmap or baseline to help doctors plot out a surgical path now or in the near future.

I get the MRI report because these people are exploring ways to avoid that surgery. For some people the MRI has terrified them.

“The catastrophization effects of an MRI report on the patient”

In July 2021 a study (16) was published that suggested that possibility of a catastrophizing effect on the patient. What does that mean? Here is what the paper’s authors said:

“Inappropriate use of MRI leads to increasing interventions and surgeries for low back pain. (The researchers) probed the potential effects of a routine MRI report (how the report was explained to the patient) on the patient’s perception of his spine and functional outcome of treatment.”

This is how the study was conducted:

  • In Phase I – 44 low back pain patients were randomized to Group A who had a factual explanation of their MRI report or Group B, who were reassured that the MRI findings showed normal changes.
  • In Phase-II, clinical reporting was developed, (an alternative way of talking to patients) avoiding potential catastrophizing terminologies.
  • In Phase-III, 20 MRIs were reported by both routine and clinical methods. The effects of the two methods were tested on four categories of health care professionals who read them blinded on their assessment of severity of disease, possible treatment required, and the probability of surgery.

In summary: Two groups of low back pain patients. One group (Group A) had their MRI read to them as you would get any MRI report. The second group (Group B) had their MRI report explained to them minimizing terminology that would concern the patient and all the while reassuring the patient that the MRI interpretation were normal of aging and degenerative changes.

  • Results: “Both groups were comparable initial by demographics and pain. After 6 weeks of treatment, Group A had a more negative perception of their spinal condition, increased catastrophization, decreased pain improvement, and poorer functional status. The alternate method of clinical reporting (Group B who had their MRI explained in more reassuring terms) had significant benefits in assessment of lesser severity of the disease, shift to lesser severity of intervention and surgery.”

Conclusion: “Routine MRI reports produce a negative perception and poor functional outcomes in low back pain. Focused clinical reporting had significant benefits, which calls for the need for ‘clinical reporting’ rather than ‘Image reporting’.”

The structures of the lower back are very complicated, making diagnosis difficult

Because the structures of the lower back are very complicated, and the specific symptoms of lower back pain are highly varied, lower back pain is one of the most difficult to diagnose and treat.

While some forms of back pain are transient—such as simple bruises caused by light trauma, which require at most an analgesic treatment to ease the pain until it heals naturally,—persistent or chronic lower back pain usually develops over an extended period of time, due to interacting causative factors involving the vertebrae and their supporting tissues. Although these two types of “extended pain” are similar in many respects, researchers have distinguished them according to a few basic guidelines.

Generally, pain is described as “persistent” if it does not heal promptly, based on statistical standards; or, if it recurs regularly, in defiance of any treatments provided. “Chronic” is the term usually reserved for pain lasting longer than three months, which, in both cause and effect, often involves psychological as well as physical factors, or combinations of the two.

Degenerative disc disease and ligament injury

As with all types of pain, there are many possible factors causing or contributing to both types of extended lower back pain. The two main causes are spondylosis, or degenerative disc disease, and muscular or ligament injury.

Ligaments are designed to handle a normal amount of stress that will stretch them to their natural limit, and will return to their normal length once the stress is removed. If additional (traumatic) stress is applied— stretching the ligament beyond its natural range of extension—the ligament will not return to its normal length, but will instead remain permanently overstretched, diminishing its power. Such a condition is called Ligament laxity. Ligament laxity in the lower back, as elsewhere in the body, may be caused by a major traumatic injury, repeated minor injuries to the same area, or simple normal aging. Unlike muscle tissue, ligaments have a very limited circulatory system that means a poor supply of blood to replenish them. This is why ligaments do not heal well on their own, and why regenerative medicine injections may help these types of injuries to stimulate circulation and to promote new cell growth.

With its overburdened matrix of ligaments, muscle, nerves, and small, interlocking bones, the spine is an area that benefits greatly from regenerative medicine injections.

The sacrum at the base of the spine is the “keystone” bone, on which all of the most vital structures of the body rest. Besides the lower vertebrae and the rest of the spinal column that it supports, it bears the weight of the entire torso with all its major organs.

And since the core of the central nervous system is housed in the spinal cord, and the nerves affect not only the legs and other extremities, but also the glands and the organs, the importance of keeping this area healthy and properly aligned becomes readily apparent. It also explains why so much of the pain reported to physicians is rooted in the lower back.

Descriptions and diagnosis of common low back pain include:

  • Lumbrosacral strain or sprain indicates a soft tissue injury of the lower back, equivalent to a sprained ankle.
  • Discogenic syndrome is used to describe pain originating in the lumbar disk, due to tears in the annulus, release of chemical mediators, or micromotion.
  • Disc Herniation indicates a displacement of the nucleus pulposus from the intervertebral space into the spinal canal or foramen, or outside the foramen. This can “pinch” a nerve root and cause  sciatica.
  • Facet syndrome describes pain originating in the zygapophyseal or “facet” joints between the vertebrae, characteristically localized in the back, aggravated by movement and alleviated by rest.
  • Spondylolisthesis is the slipping forward of one vertebral segment onto another. Retrolisthesis describes the inverse: the slipping backward of one vertebra onto another.
  • Spondylolysis indicates a defect in the structure of the pars interarticularis, while spondylosis is a catch-all phrase describing the changes that occur as a result of degenerative disk disease, such as desiccation of the disk, narrowing of the interspace, inflammation, spurring or degeneration of the bone, and ligament hypertrophy.
  • Spinal stenosis is used to describe the narrowing, in part or in whole, of the spinal canal, either through spondylosis or a congenital defect.
  • Spinal instability is a very general term used when a more precise diagnosis eludes the physician. Specifically, it refers to excess motion of the vertebrae, and can be shown on flexion and extension x-rays. If instability is severe, it can cause spinal cord injury and paralysis.

Perhaps the most distressing is “failed back syndrome” — an official-sounding term to describe the pain of those poor patients whose surgical attempts have failed to correct their problem. Many people have very successful back surgeries. Other people were told that they had very successful back surgey.

The most common cause of failed back surgery syndrome is poor judgment on the part of the physician. Surgery prescribed as a last resort, with a hope and a prayer that it might alleviate the pain. Unfortunately, often times surgery does little to help, and in fact can make things worse. Frequently surgery results in post-operative scarring, which often exacerbates the initial problem or causes new pain syndromes.

Subsequent “corrective” surgery for pain from adjacent segment disease from a fusion or Post-Laminectomy Syndrome can help in some cases, particularly if the damage done by the first operation involves clearly observable physical complications like nerve root compression, massive scarring, bone spurring or foraminal compression. Some people have had very successful back surgeries. Others were told that they had very successful surgeries but did not feel that way. In my article How successful is spinal surgery? Researchers debate what is and what is not a successful back surgery.

Treatment options

In a May 2019 study (17) that was published in the Journal of bone and mineral research plus, investigators suggested: that in discogenic back pain physicians often struggle to identify the underlying source of the pain. “As a result, discogenic back pain is often hard to treat-even more so when clinical treatment strategies are of questionable efficacy. . . Existing imaging modalities are nonspecific to pain symptoms, whereas discography methods that are more specific have known comorbidities based on intervertebral disc puncture and injection. As a result, alternative noninvasive and specific diagnostic methods are needed to better diagnose and identify specific conditions and sources of pain that can be more directly treated.”

Another suggestion they made: “Currently, there are many treatments/interventions for discogenic back pain. Nevertheless, many surgical approaches for discogenic pain have limited efficacy, thus accentuating the need for the development of novel treatments. Regenerative therapies, such as biologics, cell-based therapy, intervertebral disc repair, and gene-based therapy, offer the most promise and have many advantages over current therapies.”

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References

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