In this article we will discuss Prolotherapy injections as a means of relieving pain and restoring stability in the spine of a patient who has been diagnosed with Failed Back Surgery Syndrome.
Many people only become aware of Prolotherapy after they have undergone a surgical procedure for back pain with an outcome of less than desired results. In their researching of failed back surgery syndrome treatment options, they, perhaps like you, came upon an article like this one looking for an answer.
Although someone’s back pain may not be as severe as it was before the surgery, many will continue to experience significant back pain after spinal surgery. Why? Because the back surgery involved removing supporting structures, such as a lamina, facet, or disc, weakening their spinal structures. Prolotherapy as will be explained in this article is an injection therapy that seeks to stabilize the structures of the spine through healing soft tissue damage caused by the surgery or not fixed by the surgery.
Causes of Chronic Post-Surgical Spinal Pain
Spinal pain that occurs right after surgery is from sensitized nerves, while chronic post-surgical spinal pain is often from spinal instability but can have many different causes.
- Arachoiditous – a condition of acute inflammation of the arachnoid membrane that surrounds and protects the nerves of the spinal cord. Symptoms include intense burning or stinging pain and neurological problems.
- Deconditioning – too much bed rest
- Enthesopothy – The enthesis is the point at which the connective tissue structures, such as a joint capsule, fascia, ligament, tendon, or muscle attach to the bone. The term enthesopathy typically refers to a degenerated enthesis; though when some doctors uses this term, they typically mean enthesitis (inflammation of the enthesis).
- Epidural Fibrosis (scar tissue)
- Failure of the fusion
- Myofascial pain syndrome -muscle pain that is radiating or causing pain in seemingly unrelated parts of the bod. Since myofascial pain syndrome is caused by taut bands or trigger points in the muscles, treatments have included traditional physical therapy such as massage, ultrasound and stretching. Although these treatments provide relief, the results often diminish on the patient’s way home. The problem is that these efforts do not address weakened spinal ligaments or Enthesopothy.
- Neuralgia – Nerve pain – To do a surgical procedure, many superficial sensory nerves have to be cut in order to get down to the vertebrae, and sometimes these nerves get inflamed and/or compressed as they rebuild themselves. Generally, Lyftogt perineural injections and/ or hydrodissection works quickly to resolve this post-surgical neuritis. The treatment is done on or along the surgery site as well as on any chronic compression injuries that are found on physical examination. Generally, post-surgical treatments are given once/week until the symptoms are resolved. Most likely, four to eight sessions will be needed.
- Pain from adjacent structures.
- Spinal Instability
All spinal surgeries alter spinal mechanics, causing more force to be generated at the areas surrounding the spinal surgical site. With spinal laminectomies and microdisectomies, it is at the same spinal level. With spinal fusions and disc replacements, it is at adjacent segments. Laminectomies may contribute to clinical instability through the removal of supporting structures of the spinal column.
Two of the pillars in orthopedic surgery, Dr. Augustus A. White III and Dr. Manohar M. Panjabi, wrote in their learning and teaching text book: “We believe that the procedure [laminectomy] is done too frequently with improper indications, and with an astounding lack of appreciation of its effect on the mechanical function of the spine.”(1)
Laminectomy in the lower back, thoracic region or neck can cause or lead to spinal instability. The thoracic spine is especially vulnerable to clinical instability after a laminectomy, because it normally has a physiologic kyphosis (a curvature). Because of this normal curvature, the posterior ligaments are not as strong as other ligaments since the stability of the thoracic spine is partially derived from the rib cage. When the lamina (the bony plate of the vertebrae) is taken out, anterior forces prevail, making the thoracic kyphosis (curvature) and instability worse. Comprehensive Prolotherapy is very effective at treating post-surgical pain, including that which occurs from low back surgeries and laminectomies.
What type of treatments are available for failed back surgery patients?
A new paper in the medical journal Pain Physician makes it clear that there are not many traditional remedies for the patient who is worse off after back surgery.
This is from the research as it appeared in the medical journal Pain Physician. It comes from medical university researchers in South Korea.
“Failed back surgery syndrome is a frequently encountered disease entity following lumbar spinal surgery. Although many plausible reasons have been investigated, the exact pathophysiology remains unknown.
Various medications, reoperations, interventions such as spinal cord stimulation, epidural adhesiolysis or epidural injection, exercise therapy, and psychotherapy have been suggested treatment options (for back pain). However, the evidence of the clinical outcome for each treatment has not been clearly determined.”(2)
Not been clearly determined is a non-committal way to say these treatments will not meet the patient’s expectations of pain relief. They do not work.
Patients who suffer from failed back surgery syndrome are showing up in the offices and clinics of physicians, surgeons, and pain specialists in overwhelming numbers
Recently, researchers from John Hopkins University issued these concerns to their fellow spinal surgeons:
- Patients who suffer from failed back surgery syndrome are showing up in the offices and clinics of physicians, surgeons, and pain specialists in overwhelming numbers.
- As lumbar spinal fusion surgery continues to grow in prevalence, so will the number patients suffering from failed back surgery syndrome.
- It is important for physicians treating these patients to expand their knowledge of what causes failed back surgery syndrome so they can adequately be prepared to manage these complex cases in the future.
Management of failed back surgery patients should, according to the John Hopkins team, begin with a systematic evaluation looking for:
- new-onset stenosis,
- recurrent herniated discs
- epidural fibrosis (scar tissue in the spine),
- pseudarthrosis (a bone fracture that can only be repaired by medical intervention).
Certain diagnoses may be confirmed with diagnostic procedures such as intra-articular injections, medial branch blocks, or transforaminal nerve root blocks. Once a cause is determined, a multidisciplinary approach to treatment is most effective.
- This includes exercise or physical therapy,
- psychological counseling,
- and interventional procedures.
The most invasive treatment option, short of revision surgery, is spinal cord stimulation. This intervention has a number of studies demonstrating its efficacy and cost-effectiveness in this population. Finally, revision surgery may be used when indicated such as with progressive neurological impairment or with issues regarding previous surgical instrumentation.(3)
Why does spinal surgery fail to relieve pain?
Why do many have “disastrous results”
There are many types of spinal surgery, each with its own success and failure rates.
Korean and American doctors publishing in the publication Global Spine Journal found that patients who underwent surgery for lumbar stenosis symptoms, often show radiologic evidence of cervical and thoracic spinal stenosis. However the cervical and thoracic stenosis did not cause pain or other symptoms typical of stenosis.
When these patients were sent to lumbar decompression surgery, the prolonged surgical positioning during the lumbar decompression procedure caused the cervical and thoracic spine to become symptomatic in many patients. (4)
This is a classic example of surgery fixing one problem and causing a worse problem in another area of the spine. Non-surgical treatments for spinal instability should be explored in these patients.
In a discectomy (removal of the disc), the surgeon must spread muscle and cut various ligaments in order to perform the surgery. The surgery itself can potentially lead to ligament laxity and spinal instability. Sometimes this leads to an “immediate failure,” of the back surgery.
German researchers writing in the medical journal Neurosurgical review noted:
“Immediate failed back surgery syndrome following lumbar microdiscectomy is defined as persistence, deterioration or recurrence (during hospital stay) of radicular pain and/or sensorimotor deficits and/or sphincter dysfunction after microdiscectomy, which was uneventful from the surgeon’s perspective.
In some patients who revealed no clear reason to have Immediate failed back surgery syndrome, diagnosis of battered root syndrome (nerve root swelling due to excessive surgical manipulation) was made.(5)
Further removal of a disc or fusion at one level can lead to disc herniation at the same level or at different levels in the future. It is very common for doctors to see a patient with “one level fixed,” while another segment of the spine is now unstable, degenerated, and causing pain as noted in the above study.
Another way surgery causes harm is that in a discectomy, a large portion of the disc remains behind. This is the portion that, if removed, will cause great risk to the patient. The remaining disc can be as much as 40% of the original disc and it can also re-herniate.
Non-surgical treatments for spinal instability should be explored.
What are disastrous results in failed back surgery patients?
For patients, fixing one problem but causing the same problem to appear in another area of the spine can be seen as “disastrous results.” This is a term used by doctors in Mexico who investigated patients diagnosed with Failed Back Surgery Syndrome.
In their research they noted:
The majority of the cases in one group had a previous diagnosis of lumbar stenosis whereas disc herniation was the main diagnosis in group number
- The main reason for failed back surgery in the Stenosis group was was technical error during surgery (61.1%).
- In group 2 the disc herniation group -misdiagnosis was highly prevalent (57.4%).(6)
Therefore the disastrous results could be seen arising from “surgical error,” and MRI misinterpretation.
Research appearing in the journal, Seminars in Musculoskeletal Radiology, lists potential complications following spinal fusion which could confuse the interpretation of the MRI for doctors who are trying to see why the patient is suffering from post-surgical pain.
Radiologists are told to look for specific complications related to the use of spinal instrumentation (the hardware) that include incorrectly positioned instrumentation and failure of spinal fusion, leading to instrumentation loosening or breakage. This is in addition to leakage of cerebrospinal fluid, infection, continued disc herniation.(7)
The problem is MRI cannot tell what is causing the patient’s pain anatomically, it now has to look for suspect hardware. What if there is no suspect hardware? Diagnosis Failed Back Surgery Syndrome.
Recurrence of back or leg pain after surgery is a well-recognized problem with an incidence of up to 28%
Doctors in the United Kingdom wrote in the The Journal of bone and joint surgery:
“Recurrence of back or leg pain after discectomy is a well-recognised problem with an incidence of up to 28%. Once conservative measures have failed, several surgical options are available and have been tried with varying degrees of success….The debate around which procedure is the most effective for these patients remains controversial.”(8)
- Note that the above study cites 28% rate of post-surgical pain.
- The researchers also note that controversy exists over the best revision surgery for pain after surgery.
- Their conclusion is that surgeons may as well choose the least invasive surgery since there’s no one revision surgery that is better than the other.
As mentioned above, surgery of any kind interferes can cause harm to soft tissue, revision surgery is likely not the best answer. Non-surgical treatments for spinal instability should be explored.
Not only does the MRI confuse treatment options after spinal fusion failure – It may have lead directly to the failed surgery
If the MRI showed what was really causing the pain, the lumbar fusion would have worked!
Here is a remarkable finding from research on lumbar fusion success or non-success.
Writing in The open orthopaedics journal Bo Nystrom of the Clinic of Spinal Surgery in Sweden wrote:
“Results following fusion for chronic low back pain are unpredictable and generally not very satisfying. The major reason is the absence of a detailed description of the symptoms of patients with pain, if present, in a motion segment of the spine.
Various radiological findings have been attributed to discogenic pain, but if these radiological signs were really true signs of such pain, fusion would have been very successful.
If discogenic pain exists, it should be possible to select these patients from all others within the chronic low back pain population. Even if this selection were 100% perfect, however, identification of the painful segment would remain, and at present there is no reliable test for doing so.” (9)
Failed Back Surgery Treatment Options
Patients should be informed that the likelihood of reoperation following a lumbar spine operation is substantial.
Revision surgery is a treatment option, and a popular one. In 2007, doctors at the University of Washington published a heavily cited paper that has been referenced in more than 230 medical studies and countless articles, including this one.
The most stunning line from the study’s conclusion is this one:
“Patients should be informed that the likelihood of reoperation following a lumbar spine operation is substantial.”(10)
Most recently this research was cited in a July 2017 study from Rush University medical center doctor published in the journal Clinical Spine Surgery which examined the “unfortunate” circumstance of revision lumbar surgery.
Here are the learning points of the 2017 study:
- The need for revision of a lumbar fusion is an unfortunate occurrence, and there is little known about specific risk factors for morbidity and readmission after this procedure.
- The purpose of this study is to use a large, national sample to identify patient and operative factors that may contribute to the development of these adverse outcomes.
- In the paper’s conclusion, patients who had:
- severe symptomatic disease such as insulin-dependent diabetes.
- An operation of more than 5 hours and 10 minutes
- Three or more levels of fusion, were at greater risk of need for revision surgery
- The research sums up with: “In general, longer, more extensive procedures on sicker patients were associated with increased risk of postoperative complications and readmission.”(11)
One more note on the 2007 study, in 2011 the same research team published in The Journal of bone and joint surgery a remarkable study on a segment population of patients who experienced a DECLINE in revision surgeries. This is what the research said:
“The likelihood of repeat surgery for spinal stenosis declined with increasing age and comorbidity (worsen health problems), perhaps because of concern for greater risks.”(12)
There is limited evidence for oral opioids in the treatment of chronic low back pain; however, their routine use is widespread
- Steroids are only effective in a minority of patients with failed back surgery syndrome
- Research shows effective treatment options for failed back surgery syndrome beyond secondary revision procedures, narcotic medications, spinal cord stimulators.
Long term Oxycodone – naloxone use?
Naloxone is given to counter act the long-term effects of narcotic use. In one case study Spanish research Dr. Borja Mugabure Bujedo recorded that a combination of Oxycodone – naloxone can be a good alternative for the management of Failed Back Surgery Syndrome when other interventional or pharmacologic strategies have failed in a case report in the journal Anesthesiology and pain medicine. In this case report, higher doses than those recommended as a maximum daily ceiling (80/40 mg) were used in one selected patient with severe pain.(13)
This is something the authors of the above cited study acknowledge: “Failed Back Surgery Syndrome” obviously needs a multidimensional clinical approach. Therapy failure might result from psychosocial influences, structural abnormalities in the back, or a combination of both.”
The next sentence is much more telling. In it Dr. Bujedo notes that despite success in this reported case history:
- “causes of back pain are largely unknown and correlations with diagnostic studies are uncertain. This lack of precise diagnosis is reflected into a multiplicity of nonspecific treatments, mostly of unproven value. There is limited evidence for oral opioids in the treatment of chronic low back pain; however, their routine use is widespread.”(13)
Limitations of Spinal Cord Stimulators
Spinal cord stimulation is usually reserved as a last-chance effort at controlling back pain. Specifically it is used for people what have pain after surgery, complex regional pain syndrome, or severe nerve pain and numbness. The procedure involves implanting a small pulse generator into the stomach and running coated wires to the spine to deliver electrical impulses to the spinal cord. These electrical impulses block pain signals traveling to the brain.
In most patients we see, the spinal cord stimulator does not replace the need for narcotic medication. Additionally, a foreign device is placed in the body, which is nearly never the best option. There are risks to implanting a foreign device in the body. Some of these risks include infection, scar tissue around the stimulator, headaches, breakage of electrical wire, and pain beyond the reach of the impulses.
Research shows the good and the bad
A heavily referenced paper in the The Korean journal of pain praised spinal cord stimulation as a widely used and efficient alternative for the management of difficult to treat chronic pain, unresponsive to conservative therapies. Technological improvements have been considerable and the current neuromodulation devices are both extremely sophisticated and reliable in obtaining good results for various clinical situations of chronic pain, such as failed back surgery syndrome, complex regional pain syndrome, ischemic and coronary artery disease.(14)
In the July 2017 edition of the medical journal Spine, doctors explained that spinal cord stimulators should be explored as the best option against further exposing patients to more failed procedures: “Clinical evidence suggests that for patients with Failed Back Surgery Syndrome), repeated surgery will not likely offer relief. Additionally, evidence suggests long-term use of opioid pain medications is not effective in this population, likely presents additional complications, and requires strict management.(15)
In a December 2017 study, doctors in Spain writing in the medical journal Pain Medicine acknowledge that:
- Spinal cord stimulation for patients with failed back surgery syndrome show variable results and limited to moderate evidence.
- In the last years the stimulation of high frequency has been considered as a better alternative in this pathology for its supposed benefits compared to the stimulation with conventional frequency.
So they performed a study on 55 patients comparing high frequency and standard frequency stimulators. The result:
The evolutionary pattern of the different parameters studied in our patients with failed back surgery syndrome does not differ according to their treatment by spinal stimulation, with conventional or high frequency, in one year follow-up.(16)
One did not work better than the other.
Why the spinal cord stimulations had to be removed
Seventeen pain centers across the United States took part in a study to see why spinal cord stimulations had to be removed from patients.
In agreement from other studies, the pain centers found that clinically, spinal cord stimulation devices are cost effective and improve function as well as quality of life. However, despite the demonstrated benefits of spinal cord stimulation, some patients have the device removed. The researchers in this study wanted to know why.
The most common reason for device removal was:
- lack or loss of pain relief, (43.9%)
- followed by complications (20.2%)
This research appeared in the August 2017 edition of the medical journal Neuromodulation. (17)
Intrathecal drug delivery
Similar to a spinal cord stimulator, spinal drug delivery (or intrathecal drug delivery) involves implanting a small pump in the stomach and running a catheter to the spine to deliver pain medication. It is used for people with chronic back pain who need large doses of narcotics to deal with the pain. Compared to oral medication, this “pain pump” requires a smaller dose of narcotics because medication goes directly to the area of pain.
Research in the medical journal Neuromodulation wrote of the benefits of intrathecal drug delivery. Researchers looked at patients who were averaged 67 years of age, was 68% women, and 77% were Medicare beneficiaries.
- Ninety-five percent of patients had low back pain, and 86% had limb pain.
- The majority (81%) had pain for more than 5 years.
- Failed treatments included:
- epidural injections (74%),
- lumbar spine surgery (46%),
- spinal cord stimulation (14%),
- and facet joint injections (11%),
- with 84% also reporting significant systemic opioid side-effects.
All patients taking long-acting opioids discontinued these within one month of implant. Total systemic opioid elimination was accomplished by 68% of patients at one month post-implant, 84% at one year, and 92% at five years.(18)
However, doctors in Germany noted in the journal Pain Physician that the assessment of the functionality of intrathecal drug delivery systems remains difficult and time-consuming. Catheter-related problems are still very common, and sometimes difficult to diagnose.(19)
Mind over body pain control
In an often referenced article, doctors at the University of Duisburg-Essen in Germany wrote in the journal BMC complementary and alternative medicine:
“Mindfulness-based stress reduction (MBSR) is frequently used for pain conditions. While systematic reviews on MBSR for chronic pain have been conducted, there are no reviews for specific pain conditions. Therefore a systematic review of the effectiveness of MBSR in low back pain was performed….This review found inconclusive evidence of effectiveness of MBSR in improving pain intensity or disability in chronic low back pain patients. However, there is limited evidence that MBSR can improve pain acceptance.”(20)
- In other words, just live with the pain. Mental strength can help, but the reality is that there is an underlying cause of the pain that needs to be addressed. So what are other options for pain after back surgery?
Depression after failed back surgery
In the May 2017 edition of Journal of physical therapy science, researchers concluded that the surgery experience in patients with ongoing low-back pain makes their pain and depression worse.(21)
Here are the learning points from this research:
Doctors have long been aware that many patients experience some form of post-surgical depression in the six months following an invasive procedure. However, some researchers believe that being depressed after surgery is “understandable” and “unworthy of diagnosis or treatment.”
As most people with post-surgical depression emerge from depression after about six months, many doctors consider post-surgical depression either benign or even helpful as it keeps people inactive. Nevertheless, researchers have discovered that depressed patients are more likely to have other complications following back surgery.
They are less able to cooperate in their after-care, particularly in rehabilitative therapy. For people who have an existing history of depression and anxiety, recovery from post-surgical depression is neither guaranteed nor as straightforward as some surgeons expected.
Comprehensive Prolotherapy for failed disc surgery: realistic goals
Comprehensive Prolotherapy is a treatment designed to strengthen weakened soft tissue in the spine and bring stability to the area through injections, not surgery. More stability, less unnatural movement, less pain. We recommend a consultation for those on narcotics and those with spinal cord stimulators. In the case of spinal stimulators, we ask patients to bring in their X-rays showing exactly where the spinal cord stimulator is placed. As long as we can see where the stimulator electrodes are located we can safely do Prolotherapy.
Prolotherapy attacks the problems of a damaged spine instead of suppressing the symptoms. It offers a fix when all else fails. While Prolotherapy is an alternative to disc surgery, it can also help when disc surgery has already occurred yet failed to address the root issue.
When you fuse two or three spinal segments together, mobility is lost. Spinal twisting and torque movement, however, have to come from somewhere. Where? The spinal segments above and below the fusion. These vertebral segments now have to move “excessively” to compensate. Ultimately, this extra movement and strain will cause accelerated degeneration of the disc, ligaments, and joints of these segments, thus making the person more prone to pain in these areas. This is most likely the explanation for the increased pain a few years down the road and the “need” for more operations later.
In research from Harold Wilkinson MD, published in the medical journal Pain Physician, Dr. Wilkinson looked at difficult back pain cases: “Of the patients studied, 86% of patients had undergone prior lumbar spine surgery and all were referred for neurosurgical evaluation for possible surgery,” to see is simple dextrose Prolotherapy would be of benefit.
Here are some learning points:
- Thirty of the 35 patients in this study had been referred to a neurosurgeon because of persistent pain and disability despite prior low back surgery and were referred for consideration for possible additional surgery.
- After inclusion in this study only four patients subsequently underwent additional surgery, though 29 patients requested repeat injections.
- This suggests that painful enthesopathies can be major pain generators for some patients and that diagnosing their condition as being due to a focal problem and treating those sites with prolotherapy can be an effective and “minimally invasive” treatment alternative. (The enthesis is the point at which the connective tissue structures, such as a joint capsule, fascia, ligament, tendon, or muscle attach to the bone.) (22)
Other Prolotherapy research (23,24,25) has shown Prolotherapy can stabilize the areas that are painful. For most cases three to eight visits of Prolotherapy, given once per month is all that is needed. Remember getting one spinal fusion operation may end up leading to another. Perhaps, a second opinion by a Prolotherapy doctor before getting a spinal fusion operation is needed? It may help you avoid surgery.
Platelet Rich Plasma Therapy
Recent research says that Platelet-rich plasma (PRP) represents an additional approach, as it has shown some promise in bone regeneration, and should be explored for its potential role in limiting spinal fusion surgery failures.(26)
In other research PRP injections into atrophied lumbar multifidus muscle were found to be a safe, effective method for relieving chronic low back pain and disability with long-term patient satisfaction and success rate of 71.2%.(27)
References for this article on Failed back surgery
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28. Failed back surgery treatment options Ross Hauser MD