Chiropractic and
Spinal Pain Management

Cannabis for Pain and Headaches: Primer
Curr Pain Headache Rep. 2017 (Apr);   21 (4):   19 ~ FULL TEXT
Synthetic cannabinoids are being developed and synthesized from the marijuana plant such as dronabinol and nabilone. The US Food and Drug Administration approved the use of dronabinol and nabilone for chemotherapy-associated nausea and vomiting and HIV (Human Immunodeficiency Virus) wasting. Nabiximols is a cannabis extract that is approved for the treatment of spasticity and intractable pain in Canada and the UK. Further clinical trials are studying the effect of marijuana extracts for seizure disorders. Phytocannabinoids have been identified as key compounds involved in analgesia and anti-inflammatory effects. Other compounds found in cannabis such as flavonoids and terpenes are also being investigated as to their individual or synergistic effects. This article will review relevant literature regarding medical use of marijuana and cannabinoid pharmaceuticals with an emphasis on pain and headaches.

The Impact of Pain-related Fear on Neural Pathways of Pain Modulation in Chronic Low Back Pain
Pain Rep. 2017 (Apr 11);   2 (3):   e601 ~ FULL TEXT
Our results might indicate a maladaptive psychobiological interaction in chronic LBP characterized by an attenuation of amygdala-PAG-FC that is modulated by the degree of pain-related fear. Besides the established role of the PAG in the modulation of nociceptive inputs, our results add further evidence to the involvement of the PAG in negative emotional processing not directly related to nociception. [9, 28] Furthermore, while we have previously shown that pain-related fear is positively correlated with amygdala activity in chronic LBP, [16] enhanced pain-related fear seems to simultaneously dampen the neural cross-talk between the amygdala and the PAG. This decreased informaion exchange between 2 key pain modulatory structures might ultimately tip the balance of PAG function to facilitation, ie, increased pronociception. [11] Thus, the decreased cross-talk between the amygdala and the PAG, in conjunction with increased amygdala activity, might be the neurobiological basis of how pain-related fear contributes to pain and its chronification.

Elevated Production of Nociceptive CC-chemokines and sE-selectin in Patients with Low Back Pain
and the Effects of Spinal Manipulation: A Non-randomized Clinical Trial
Clin J Pain. 2017 (Apr 19) [Epub] ~ FULL TEXT
The production of chemotactic cytokines is significantly and protractedly elevated in LBP patients. Changes in chemokine production levels, which might be related to SMT, differ in the acute and chronic LBP patient cohorts.

Provider and Patient Perspectives on Opioids and Alternative Treatments
for Managing Chronic Pain: A Qualitative Study
BMC Fam Pract. 2017 (Mar 24);   17 (1):   164 ~ FULL TEXT
Despite widespread dissatisfaction with opioid medications for pain management, many practical barriers challenged access to other options. Most of the participants' perceived acupuncture and chiropractic (A/C) care as helpful for short term pain relief. We identified that problems with timing, expectations, and plan coverage limited A/C care potential for pain relief treatment.   CONCLUSIONS:   These results suggest that education about realistic expectations for chronic pain management and therapy options, as well as making acupuncture and chiropractic (A/C) care more easily accessible, might lead to more satisfaction for patients and providers, and provide important input to policy makers.

Complementary and Alternative Medicine Use by Children with Pain in the United States
Acad Pediatr. 2017 (Feb 20).  pii: S1876-2859(17)30063-3
Parents reported that 26.6% of children had pain conditions (e.g. headache, abdominal, musculoskeletal pain) in the past year; of these children, 21.3% used CAM. In contrast only 8.1% of children without pain conditions used CAM (χ²: p<.001). CAM use among children with pain was associated with female sex (adjusted odds ratio (aOR)=1.49, p=0.005), higher income (aOR=1.61, p=0.027), and presence of 4+ comorbidities (aOR=2.01, p=0.013). Among children with pain who used CAM the 2 most commonly used CAM modalities were biologically-based therapies (47.3%) (e.g., special diets and herbal supplements) and manipulative or body-based therapies (46.3%) (e.g., chiropractic and massage).   CONCLUSIONS: CAM is frequently used by children with pain in the USA and many parents report benefits for their child's symptoms.

Non-steroidal Anti-inflammatory Drugs for Spinal Pain: A Systematic Review and Meta-analysis
Annals of the Rheumatic Diseases 2017 (Feb 2) [Epub ahead of print]
While it is now clear that paracetamol is ineffective for spinal pain, there is not consensus on the efficacy of non-steroidal anti-inflammatory drugs (NSAIDs) for this condition. We performed a systematic review with meta-analysis to determine the efficacy and safety of NSAIDs for spinal pain. We included 35 randomised placebo-controlled trials. NSAIDs reduced pain and disability, but provided clinically unimportant effects over placebo. Six participants (95% CI 4 to 10) needed to be treated with NSAIDs, rather than placebo, for one additional participant to achieve clinically important pain reduction. When looking at different types of spinal pain, outcomes or time points, in only 3 of the 14 analyses were the pooled treatment effects marginally above our threshold for clinical importance. NSAIDs increased the risk of gastrointestinal reactions by 2.5 times (95% CI 1.2 to 5.2), although the median duration of included trials was 7 days.

Multivariable Modeling of Factors Associated with Spinal Pain in Young Adolescence
European Spine Journal 2016 (Sep);   25 (9):   2809–2821 ~ FULL TEXT
Psychosomatic symptoms and pain comorbidities had the strongest association with 1-month period prevalence of spinal pain in young adolescents, followed by factors from the physical and psychosocial domains. The role that "physical factors" play in non-adult spinal pain may have been underestimated by previous studies.

Combining Pain Therapy with Lifestyle: The Role of Personalized
Nutrition and Nutritional Supplements According to the
SIMPAR Feed Your Destiny Approach
J Pain Res. 2016 (Dec 8);   9:   1179–1189 ~ FULL TEXT
Recently, attention to the lifestyle of patients has been rapidly increasing in the field of pain therapy, particularly with regard to the role of nutrition in pain development and its management. In this review, we summarize the latest findings on the role of nutrition and nutraceuticals, microbiome, obesity, soy, omega-3 fatty acids, and curcumin supplementation as key elements in modulating the efficacy of analgesic treatments, including opioids. These main topics were addressed during the first edition of the Study In Multidisciplinary Pain Research workshop: "FYD (Feed Your Destiny): Fighting Pain", held on April 7, 2016, in Rome, Italy, which was sponsored by a grant from the Italian Ministry of Instruction on "Nutraceuticals and Innovative Pharmacology".

Evidence-Based Evaluation of Complementary Health Approaches for Pain Management
in the United States
Mayo Clin Proc. 2016 (Sep);   91 (9):   1292–1306 ~ FULL TEXT
Although most pain is acute and resolves within a few days or weeks, millions of Americans have persistent or recurring pain that may become chronic and debilitating. Medications may provide only partial relief from this chronic pain and can be associated with unwanted effects. As a result, many individuals turn to complementary health approaches as part of their pain management strategy. This article examines the clinical trial evidence for the efficacy and safety of several specific approaches-acupuncture, manipulation, massage therapy, relaxation techniques including meditation, selected natural product supplements (chondroitin, glucosamine, methylsulfonylmethane, S-adenosylmethionine), tai chi, and yoga-as used to manage chronic pain and related disability associated with back pain, fibromyalgia, osteoarthritis, neck pain, and severe headaches or migraines.

Multidimensional Diagnostic Criteria for Chronic Pain: Introduction to
the ACTTION-American Pain Society Pain Taxonomy (AAPT)
J Pain. 2016 (Sep);   17 (9 Suppl):   T1–9 ~ FULL TEXT
A variety of approaches have been used to develop diagnostic criteria for chronic pain. The published evidence of the reliability and validity of existing diagnostic criteria is limited, and these criteria have typically not been used in clinical practice. The availability of a widely accepted, consistently applied, and evidence-based taxonomy of diagnostic criteria would improve the quality of clinical research on chronic pain and would be of great value in clinical practice. To address the need for evidence-based diagnostic criteria for the major chronic pain conditions, the Analgesic, Anesthetic, and Addiction Clinical Trial Translations, Innovations, Opportunities, and Networks (ACTTION) public-private partnership with the US Food and Drug Administration and the American Pain Society (APS) have collaborated on the development of the ACTTION-APS Pain Taxonomy (AAPT).

Whose Pain Is It Anyway? Comparability of Pain Reports From Children and Their Parents
Chiropractic & Manual Therapies 2016 (Aug 1);   24:   24 ~ FULL TEXT
Percentage agreement between parent and child assessment was around 50% in Sample 1 and 68% in Sample 2. The poor agreement was due to children reporting pain when their parent did not, the reverse very rarely occurred. Pain of greater intensity or longer duration resulted in better agreement between the child and parent. Child age and gender did not influence the likelihood of agreement.

Cross-Sectional Analysis of Per Capita Supply of Doctors of Chiropractic
and Opioid Use in Younger Medicare Beneficiaries
J Manipulative Physiol Ther. 2016 (May);   39 (4):   263–266 ~ FULL TEXT
In this exploratory analysis, we found a strong inverse correlation between the per-capita supply of DCs and the proportion of younger Medicare beneficiaries who filled opioid prescriptions. Further, we found a strong inverse correlation between the per-capita spending on CMT and the proportion of younger Medicare beneficiaries who filled opioid prescriptions. Based upon our findings, we suggest that Medicare consider promoting a trial of CMT prior to use of conventional medical care for patients with neck or back pain. The rationale for use of CMT prior to medical care is that concurrent medical care might result in opioid prescriptions; however, further study that examines opioid use when CMT and conventional medical care are concurrently provided is warranted.

Does Cervical Spine Manipulation Reduce Pain in People With Degenerative
Cervical Radiculopathy? A Systematic Review of the Evidence,
and a Meta-analysis
Clinical Rehabilitation 2016 (Feb);   30 (2):   145–155
Three trials with 502 participants were included. Meta-analysis suggested that cervical spine manipulation (mean difference 1.28, 95% confidence interval 0.80 to 1.75; P < 0.00001; heterogeneity: Chi(2) = 8.57, P = 0.01, I(2) = 77%) improving visual analogue scale for pain showed superior immediate effects compared with cervical computer traction. The overall strength of evidence was judged to be moderate quality. One out of three trials reported the adverse events and none with a small sample size.

On The Origin of Atraumatic Neuromusculoskeletal Pain
Chiropractic Journal of Australia 2016 (Jan);   44 (1):   1–8 ~ FULL TEXT
The purpose of this study was to examine the possible origins of non-specific or atraumatic back pain by applying the Gate Theory of pain and current physiologic concepts. I present a theory that accounts for the initiation and potential consequences of neuromusculoskeletal pain incorporating failure of the mechanism of muscle relaxation and resulting in pain and compromise of the lymphatic system. The theory provides an alternative to current theories and hypotheses of the cause and consequences of neuromusculoskeletal pain.

The Effect of Spinal Manipulation on Deep Experimental Muscle Pain in Healthy Volunteers
Chiropractic & Manual Therapies 2015 (Sep 7);   23:   25 ~ FULL TEXT
The current findings do not support the theory that HVLA-manipulation has a non-specific, reflex-mediated local or generalized analgesic effect on experimentally induced deep muscle pain. This in turn suggests, that any clinical analgesic effect of HVLA-manipulation is likely related to the amelioration of a pre-existing painful problem, such as reduction of biomechanical dysfunction.

Pain Characteristics of Adolescent Spinal Pain
BMC Pediatr. 2015 (Apr 17);   15 (1):   42 ~ FULL TEXT
Adolescents who suffered from pain in more than one spinal area reported higher pain intensity and frequency than those with pain in only one spinal area. Sleep disorders were a significant predictor for pain in more than one spinal area (p < 0.01) as well as a trend for frequent pain (p = 0.06). Adolescents with frequent pain showed impaired balance on one leg standing with closed eyes (p = 0.02).

Patients' Experiences and Expectations of Chiropractic Care:
A National Cross-sectional Survey
Chiropractic & Manual Therapies 2015 (Jan 16);   23 (1):   3 ~ FULL TEXT
Overall, patients reported a high level of satisfaction with the benefits of their chiropractic care, although there is a likelihood of bias towards patients with a positive experience of chiropractic. There were no serious adverse reactions; however, patients reported concern about pain, tingling and numbness in the limbs after chiropractic. In general, patients' expectations were being well met.

A Modern Neuroscience Approach to Chronic Spinal Pain: Combining Pain
Neuroscience Education with Cognition-targeted Motor Control Training
Phys Ther. 2014 (May);   94 (5):   730–738 ~ FULL TEXT
Chronic spinal pain (CSP) is a severely disabling disorder, including nontraumatic chronic low back and neck pain, failed back surgery, and chronic whiplash-associated disorders. Much of the current therapy is focused on input mechanisms (treating peripheral elements such as muscles and joints) and output mechanisms (addressing motor control), while there is less attention to processing (central) mechanisms. In addition to the compelling evidence for impaired motor control of spinal muscles in patients with CSP, there is increasing evidence that central mechanisms (ie, hyperexcitability of the central nervous system and brain abnormalities) play a role in CSP. Hence, treatments for CSP should address not only peripheral dysfunctions but also the brain. Therefore, a modern neuroscience approach, comprising therapeutic pain neuroscience education followed by cognition-targeted motor control training, is proposed.

Spinal Pain in Adolescents: Prevalence, Incidence, and Course:
A School-based Two-year Prospective Cohort Study
in 1,300 Danes Aged 11–13
BMC Musculoskelet Disord. 2014 (May 29);   15:   187 ~ FULL TEXT
Spinal pain is common at the age of 11–15 years, but some have more pain than others. The pain is likely to progress, i.e., to more locations, higher frequency, and higher pain intensity over a two-year period.

Spinal Manipulative Therapy-specific Changes in Pain Sensitivity in Individuals with Low Back Pain
Journal of Pain 2014 (Feb);   15 (2):   136–148 ~ FULL TEXT
Participants receiving the SMT and placebo SMT received their assigned intervention 6 times over 2 weeks. Pain sensitivity was assessed prior to and immediately following the assigned intervention during the first session. Clinical outcomes were assessed at baseline and following 2 weeks of participation in the study. Immediate attenuation of suprathreshold heat response was greatest following SMT (P = .05, partial η² = .07). Group-dependent differences were not observed for changes in pain intensity and disability at 2 weeks. Participant satisfaction was greatest following the enhanced placebo SMT.

Short-term Usual Chiropractic Care for Spinal Pain: A Randomized Controlled Trial
Spine (Phila Pa 1976). 2013 (Nov 15);   38 (24):   2071–2078 ~ FULL TEXT
One hundred eighty three participants (chiropractic, n = 92; sham, n = 91) were recruited and included in the analyses. Participants receiving chiropractic therapy reported greater improvements in pain (mean difference, 95% confidence interval [CI] = 0.5 [0.1–0.9]), physical function (mean difference [95% CI] = 2.1 [0.3–4.0]), and were more likely to experience global improvement (48% vs. 24%, P = 0.01) and treatment satisfaction (78% vs. 56%, P < 0.01). There was no between-group difference in achieving a minimally acceptable outcome (34% sham vs. 29% chiropractic, P = 0.42). Awareness of treatment assignment and achieving minimally important improvement in pain intensity were associated with chiropractic treatment satisfaction.

Chiropractic Management of Postoperative Spine Pain: A Report of 3 Cases
Journal of Chiropractic Medicine 2013 (Sep);   12 (3):   168–175 ~ FULL TEXT
Chronic pain after surgery is common. [1, 2] It has been reported that about 1 in 5 patients who have undergone various surgical procedures experiences severe postoperative pain or only poor to fair pain relief despite pain management therapies. [2] With regard to spinal surgery, it is estimated that 15% to 61% of patients report persistent or recurrent pain postsurgically depending on the specific intervention. [3–5] Moreover, up to two-thirds of all chronic pain patients enrolled in pain centers in the United States are believed to experience failed back surgery syndrome. [6] Data suggest that chronic back pain post–spinal surgery should be treated nonoperatively unless progressive neurologic deficits exist. [7]

Changes In Primary Care Physician's Management of Low Back Pain in a Model of
Interprofessional Collaborative Care: An Uncontrolled Before-after Study
Chiropractic & Manual Therapies 2013 (Feb 1);   21 (1):   6 ~ FULL TEXT
There were twice as many patients in the pre-study group who were prescribed medication compared to the study group. Almost 33% of patients in the pre-study group were concurrently prescribed a second, and 4% a third medication, compared to 6% of patients in study group who received only a second prescription. Despite the similarity in recorded pain severity, there were about 2.6 times more medications prescribed in the pre-study group compared to those in the study group.

Changes in Pain Sensitivity Following Spinal Manipulation: A Systematic Review and Meta-analysis
J Electromyogr Kinesiol. 2012 (Oct);   22 (5):   752–767 ~ FULL TEXT
Spinal manipulation (SMT) demonstrated a favorable effect over other interventions on increasing PPT. Subgroup analysis showed a significant effect of SMT on increasing mechanical pressure pain threshold (PPT) at the remote sites of stimulus application supporting a potential central nervous system mechanism. Future studies of SMT related hypoalgesia should include multiple experimental stimuli and test at multiple anatomical sites.

The Effect of Spinal Manipulative Therapy on Experimentally Induced Pain:
A Systematic Literature Review
Chiropractic & Manual Therapies 2012 (Aug 10);   20 (1):   26 ~ FULL TEXT
A systematic search was performed for experimental studies on healthy volunteers and people without chronic syndromes, in which the immediate effect of SMT was tested. Articles selected were reviewed blindly by two authors. A summary quality score was calculated to indicate level of manuscript quality. Outcome was considered positive if the pain-reducing effect was statistically significant. Separate evidence tables were constructed with information relevant to each research question. Results were interpreted taking into account their manuscript quality.

Advancements in the Management of Spine Disorders
Best Pract Res Clin Rheumatol. 2012 (Apr);   26 (2):   263–280 ~ FULL TEXT
Despite, or perhaps because of its impact, spinal disorders remain one of the most controversial and difficult conditions for clinicians, patients and policymakers to manage. This paper provides a brief summary of advances in the understanding of back and neck pain over the past decade as evidenced in the current literature. This paper includes the following sections: a classification of spinal disorders; the epidemiology of spine pain in the developed and developing world; key advancements in biological and biomechanical sciences in spine pain; the current status of potential methods for the prevention of back and neck pain; rheumatological and systemic disorders that impact the spine; and evidence-based surgical and non-surgical management of spine pain. The final section of this paper looks to the future and proposes actions and strategies that may be considered by the international Bone and Joint Decade (BJD), by providers, institutions and by policymakers so that we may better address the burden of spine disorders at global and local levels.

Pain in the Three Spinal Regions: The Same Disorder?
Data From a Population-based Sample of 34,902 Danish Adults
Chiropractic & Manual Therapies 2012 (Apr 5);   20:   11 ~ FULL TEXT
In all, 34,902 (74%) twin individuals representative of the general Danish population, aged 20 to 71, participated in a cross-sectional nation-wide survey. Identical questions from the Standardised Nordic Questionnaire for each of the three spinal regions were used for lumbar, mid-back and neck pain respectively: Pain past year, pain ever, radiating pain, and consequences of back pain (care-seeking, reduced physical activities, sick-leave, change of work/work duties and disability pension). The relative prevalence estimates of these variables were compared for the three spinal regions.

Spinal Manipulative Therapy and Its Role in the Prevention, Treatment and Management
of Chronic Pain
J Canadian Chiro Assoc 2012 (Mar);   56 (1):   5-7 ~ FULL TEXT
Chronic pain is a worldwide epidemic. It is characterized as “pain that persists beyond normal tissue healing time” [1] and is physiologically distinct from acute nociceptive pain. The current research estimates the prevalence of chronic pain in the general population to be anywhere from 10–55%, [2] predominantly affecting the adult population. Studies indicate that the prevalence of chronic pain in the over-60 age group is double that for younger adults. [3] Furthermore, over 80% of elderly (over 65) adults suffer from some form of painful chronic joint disease [4] and greater than 85% of the general population will experience some form of chronic myofascial pain during their lifetime. [5]

Elevated Production of Inflammatory Mediators Including Nociceptive
Chemokines in Patients With Neck Pain: A Cross-Sectional Evaluation
J Manipulative Physiol Ther. 2011 (Oct);   34 (8):   498–505 ~ FULL TEXT
Production of inflammatory mediators was consistently elevated in NP patients in this study, both in vitro and in vivo, and activation of inflammatory pathways was accompanied by up-regulation of CC chemokine synthesis. This suggests that, in NP patients, CC chemokines may be involved in regulation of local inflammatory response through recruitment of immune cells to the inflamed tissue and exert pronociceptive effects.

Pain in Children and Adolescents: Prevalence, Impact on Daily Life,
and Parents' Perception, A School Survey
Scand J Caring Sci. 2011 (Mar);   25 (1):   27–36
Sixty per cent of the children and adolescents reported pain within the previous 3 months. Pain increased with age, where girls aged 16–18 years reported the most pain. Total prevalence of chronic pain was 21%. Children reported impact on social life; inability to pursue hobbies, disturbed sleep, absence from school, and inability to meet friends because of pain. The girls reported significantly more frequently disturbed sleep, loss of appetite, and use of medication, compared to the boys. There was little agreement between parents and children regarding pain.

Consequences of Spinal Pain: Do Age and Gender Matter? A Danish Cross-sectional
Population-based Study of 34,902 Individuals 20–71 Years of Age
BMC Musculoskelet Disord. 2011 (Feb 8);   12:   39 ~ FULL TEXT
Almost two-thirds of individuals with spinal pain did not report any consequence. Generally, consequences due to LBP were more frequently reported than those due to NP or MBP. Regardless of area of complaint, care seeking and reduced physical activities were the most commonly reported consequences, followed by sick-leave, change of work, and disability pension. There was a small mid-life peak for care-seeking and a slow general increase in reduced activities with increasing age. Increasing age was not associated with a higher reporting of sick-leave but the duration of the sick-leave increased somewhat with age. Disability pension due to spinal pain was reported exceedingly rare before the age of 50. Typically, women slightly more often than men reported some kind of consequences due to spinal pain.

Manual Therapy and Exercise for Neck Pain: A Systematic Review
Man Ther. 2010 (Aug);   15 (4):   334–354
Manual therapy is often used with exercise to treat neck pain. This cervical overview group systematic review update assesses if manual therapy, including manipulation or mobilisation, combined with exercise improves pain, function/disability, quality of life, global perceived effect, and patient satisfaction for adults with neck pain with or without cervicogenic headache or radiculopathy. Computerized searches were performed to July 2009. Two or more authors independently selected studies, abstracted data, and assessed methodological quality. Pooled relative risk (pRR) and standardized mean differences (pSMD) were calculated. Of 17 randomized controlled trials included, 29% had a low risk of bias.
There are more articles like this at our: Exercise and Chiropractic Care Page

Pain Management by Primary Care Physicians, Pain Physicians,
Chiropractors, and Acupuncturists: A National Survey
Southern Medical Journal 2010 (Aug);   103 (8):   738–747
Of the chronic pain patients seen for evaluation, the percentages subsequently treated on an ongoing basis range from 51% (PCPs) to 63% (pain physicians). Pain physicians prescribe long-acting opioids such as methadone, antidepressants or anti-convulsants, and other nontraditional analgesics approximately 50–100% more often than PCPs. Twenty-nine percent of PCPs and 16% of pain physicians reported prescribing opioids less often than they deem appropriate because of regulatory oversight concerns. Of the four groups, PCPs are least likely to feel confident in their ability to manage musculoskeletal pain and neuropathic pain, and are least likely to favor mandatory pain education for all PCPs.

Spinal Manipulative Therapy Has an Immediate Effect on Thermal Pain Sensitivity
in People With Low Back Pain: A Randomized Controlled Trial
Phys Ther. 2009 (Dec); 89 (12): 1292–1303
Hypoalgesia to A-delta fiber-mediated pain perception was not observed. Group-dependent hypoalgesia of temporal summation specific to the lumbar innervated region was observed. Pair-wise comparisons indicated significant hypoalgesia in participants who received SMT, but not in those who rode a stationary bicycle or performed low back extension exercises. Psychological factors did not significantly correlate with changes in temporal summation in participants who received SMT.

Chronic Pain Reconsidered
Pain. 2008 (Aug 31);   138 (2):   267–276 ~ FULL TEXT
Chronic pain has been traditionally defined by pain duration, but this approach has limited empirical support and does not account for chronic pain's multi-dimensionality. This study compared duration-based and prospective approaches to defining chronic pain in terms of their ability to predict future pain course and outcomes for primary care patients with three common pain conditions: back pain (n=971), headache (n=1078), or orofacial pain (n=455).   At baseline, their chronic pain was classified retrospectively based on Pain Days in the prior six months and prospectively with a prognostic Risk Score identifying patients with "possible" or "probable" chronic pain.\

Recognizing the Value of Chiropractic for Chronic Pain
Dynamic Chiropractic 2008 (Sep 23);   26 (20):
The guidelines actually recommend manipulation for chronic, persistent low back or neck pain and cervicogenic headache. [2] This is significant because in the past, the guidelines failed to recommend manipulation, even when other treatment strategies (medication, etc.) were rated as less effective.

Efficacy of Selected Complementary and Alternative Medicine Interventions For Chronic Pain
J Rehabil Res Dev. 2007;   44 (2):   195–222 ~ FULL TEXT
Complementary and alternative medicine (CAM) is a group of diverse medical and healthcare systems, therapies, and products that are not presently considered part of conventional medicine. This article provides an up-to-date review of the efficacy of selected CAM modalities in the management of chronic pain. Findings are presented according to the classification system developed by the National Institutes of Health National Center for Complementary and Alternative Medicine (formerly Office of Alternative Medicine) and are grouped into four domains: biologically based medicine, energy medicine, manipulative and body-based medicine, and mind-body medicine.

Immediate Effects on Pressure Pain Threshold Following a Single
Cervical Spine Manipulation in Healthy Subjects
J Orthop Sports Phys Ther. 2007 (Jun);   37 (6):   325–329
The application of a manipulative intervention directed at the posterior joint of the C5–6 vertebral level produced an immediate increase in PPT over the lateral epicondyle of both elbows in healthy subjects. Effect sizes for the HVLA thrust manipulation were large, suggesting a strong effect of unknown clinical importance at this stage, whereas effect sizes for both placebo and control procedures were small, suggesting no significant effect.

Alternatives in Cancer Pain Treatment: The Application of Chiropractic Care
Semin Oncol Nurs 2005 (Aug);   21 (3):   184–189
The judicial use of chiropractic services in cancer patients appears to offer many economical and effective strategies for reducing the pain and suffering of cancer patients, as well as providing the potential to improve patient health overall. You'll find more articles like this in the Chiropractic And Cancer Page.

Pain Has Significant Negative Effects on Health and Workplace Productivity
J Occupational and Environmental Medicine 2005 (Jul);   47 (7):   658–670
Pain is one of the leading causes of both worker absenteeism, in which an employee must take time away from work, and worker "presenteeism," in which an employee's overall effectiveness at work is limited as a result from physical and/or mental health problems. The effect pain can have on both employees and employers continues to increase significantly; by some estimates, common pain conditions now account for more than $62 billion per year in lost productivity.

Psychosocial Factors and their Role in Chronic Pain:
A Brief Review of Development and Current Status
Chiropractic & Osteopathy 2005 (Apr 27);   13 (1):   6 ~ FULL TEXT
The belief that pain is a direct result of tissue damage has dominated medical thinking since the mid 20th Century. Several schools of psychological thought proffered linear causal models to explain non-physical pain observations such as phantom limb pain and the effects of placebo interventions. Psychological research has focused on identifying those people with acute pain who are at risk of transitioning into chronic and disabling pain, in the hope of producing better outcomes.

Chronic Pain in Persons With Neuromuscular Disease
Clin J Pain 2005 (Jan);   21 (1):   18–26
In this paper, researchers in a medical school rehabilitation department were interested in finding out what treatments were most effective at reducing pain for neuromuscular diseases (like amyotrophic lateral sclerosis and myotonic muscular dystrophies).

Interestingly, chiropractic scored with the highest pain relief rating
(7.33 out of 10), scoring higher than the relief provided by either:

• nerve blocks   (6.75),
• opioid analgesics   (6.37),
• Muscle relaxants   (5.78),
• Massage   (5.48),
• Acupuncture   (5.29), or
• Ibuprofen, aspirin   (5.22).   WOW!!!

Treatment Expectancy Affects the Outcome of Cognitive-Behavioral
Interventions in Chronic Pain
Clin J Pain 2005 (Jan);   21 (1):   18–26
Patients' initial beliefs about the success of a given pain treatment are shown to have an important influence on the final treatment outcome. The aims of the paper are to assess determinants of patients' treatment expectancy and to examine the extent to which treatment expectancy predicts the short-term and long-term outcome of cognitive-behavioral treatment of chronic pain.

Qualitative Review of Studies of Manipulation-induced Hypoalgesia
J Manipulative Physiol Ther 2000 (Feb);   23 (2):   134–138
From the early 1990s, there are several reports involving the use of the pressure algometer initially devised by Fischer. [24] Vernon [25] was the first to report the improvement in paraspinal pressure pain threshold (PPT) levels after manipulation. Six tender muscle spots were measured bilaterally in a subject with chronic right-sided neck and scapular pain. The right side muscle values were all significantly lower than those on the left and were lower than the normal cut-off value of 3.5 kg/cm2 established by Fischer. [24] After a cervicoscapular manipulation, PPT levels rose by an average of 45%, whereas the patient's pain score dropped from 6 to 1/10 on a 10-centimeter VAS. In 1992, Vernon et al [12] reported on 9 subjects with chronic neck pain. Baseline PPT values were obtained bilaterally around the painful segment (fixation) for a total of 4 measured sites. Five subjects were randomly assigned to receive a rotary manipulation, and 4 subjects received the same sort of oscillatory mobilization that had been used in the endorphin study. [21] In the group receiving manipulation, PPT levels at 5 minutes after treatment rose at all 4 sites (ie, bilaterally) an average of 45%, whereas in the control group there was no increase. This difference was statistically significant at all 4 points.

Clinical Study on Manipulative Treatment of Derangement of the Atlantoaxial Joint
J Tradit Chin Med 1999 (Dec);   19 (4):   273–278
The derangement of the atlantoaxial joint is one of main cervical sources of dizziness and headache, which were based on the observation on the anatomy of the upper cervical vertebrae, analysis of X-ray film of the atlantoaxial joint, and the manipulative treatment in 35 patients with cervical spondylosis.

Spinal Pain Syndromes: Nociceptive, Neuropathic, and Psychologic Mechanisms
J Manipulative Physiol Ther 1999 (Sep);   22 (7):   458–472 ~ FULL TEXT
Although the treatment of neuropathic pain is difficult, sufficient evidence in the literature demonstrates that the treatment of nociceptive pain should be multimodal and involve spinal manipulation, muscle lengthening/stretching, trigger point therapy, rehabilitation exercises, electrical modalities, a variety of nutritional factors, and mental/emotional support.

Chronic Spinal Pain Syndromes: A Clinical Pilot Trial Comparing Acupuncture,
A Nonsteroidal Anti-inflammatory Drug, and Spinal Manipulation
J Manipulative Physiol Ther 1999 (Jul);   22 (6):   376–381 ~ FULL TEXT
The consistency of the results provides, in spite of several discussed shortcomings of this pilot study, evidence that in patients with chronic spinal pain syndromes spinal manipulation, if not contraindicated, results in greater improvement than acupuncture and medicine.

From the Gate to the Neuromatrix
Pain 1999;   Suppl 6 Aug:   S121–126
The gate control theory's most important contribution to understanding pain was its emphasis on central neural mechanisms. The theory forced the medical and biological sciences to accept the brain as an active system that filters, selects and modulates inputs. The dorsal horns, too, were not merely passive transmission stations but sites at which dynamic activities (inhibition, excitation and modulation) occurred. The great challenge ahead of us is to understand brain function.

1999 National Pain Survey ~ Executive Summary
Ortho-McNeil Pharmaceutical
Approximately 24 percent of Americans, or roughly 48 million people, suffer from chronic pain; 21.6 million Americans, or one in ten (11%) adults, take prescription pain medication regularly to manage chronic pain; Among individuals taking prescription pain medication, the most common types of chronic pain are arthritis (31%), lower back pain (25%), other types of bone/joint pain (17%), muscle pain or stiffness (13%) and fibromyalgia (12%).

Recent Considerations in Nonsteroidal Anti-inflammatory Drug Gastropathy
American Journal of Medicine 1998 (Jul 27);   105 (1B):   31S–38S
Conservative calculations estimate that approximately 107,000 patients are hospitalized annually for nonsteroidal anti-inflammatory drug (NSAID)-related gastrointestinal (GI) complications and at least 16,500 NSAID-related deaths occur each year among arthritis patients alone.
The figures for all NSAID users would be overwhelming, yet the scope of this problem is generally under-appreciated.   Analysis of these data indicates that:

(1)   osteoarthritis (OA) and rheumatoid arthritis (RA) patients are 2.5–5.5 times more likely than the general population to be hospitalized for NSAID-related GI events;

(2)   the absolute risk for serious NSAID-related GI toxicity remains constant and the cumulative risk increases over time;

(3)   there are no reliable warning signals- >80% of patients with serious GI complications had no prior GI symptoms;

(4)   independent risk factors for serious GI events were age, prednisone use, NSAID dose, disability level, and previous NSAID-induced GI symptoms; and

(5)   antacids and H2 antagonists do not prevent NSAID-induced gastric ulcers, and high-risk NSAID users who take gastro-protective drugs are more likely to have serious GI complications than patients not taking such medications.

Currently, limiting NSAID use is the only way to decrease the risk of NSAID-related GI events.

Dysafferentation: A Novel Term to Describe the Neuropathophysiological
Effects of Joint Complex Dysfunction. A Look at Likely Mechanisms
of Symptom Generation
J Manipulative Physiol Ther 1998 (May);   21 (4):   267–280 ~ FULL TEXT
Joint complex dysfunction should be included in the differential diagnosis of pain and visceral symptoms because joint complex dysfunction can often generate symptoms which are similar to those produced by true visceral disease.
You may also enjoy this response from another chiropractic researcher.

Neuroanatomy of the Pain System and of the Pathways that Modulate Pain
J Clin Neurophysiol 1997 (Jan);   14 (1):   2–31
We review many of the recent findings concerning mechanisms and pathways for pain and its modulation, emphasizing sensitization and the modulation of nociceptors and of dorsal horn nociceptive neurons.

Chronic Cervical Zygapophysial Joint Pain After Whiplash:
A Placebo–Controlled Prevalence Study
Spine 1996 (Aug 1);   21 (15):   1737–1744
The prevalence of cervical zygapophysial joint pain after whiplash has been studied by means of comparative local anesthetic blocks. The concern is that such blocks may be compromised by placebo responses and that prevalence estimates based on such blocks may exaggerate the importance of this condition. In this study, sixty-eight consecutive patients referred for chronic neck pain after whiplash were studied. Those who did not experience pain relief together with the patients with dominant neck pain proceeded to undergo placebo-controlled local anesthetic blocks. Two different local anesthetics and a placebo injection of normal saline were administered in random order and under double-blindfolded conditions. A positive diagnosis was made if the patient's pain was completely and reproducibly relieved by each local anesthetic but not by the placebo injection. Overall, the prevalence of cervical zygapophysial joint pain (C2-C3 or below) was 60% (95% confidence interval, 46%, 73%).

Substance P Induced by Peripheral Nerve Injury in Primary Afferent
Sensory Neurons and its Effect on Dorsal Column Nucleus Neurons
J Neurosci 1995 (Nov);   15 (11):   7633–7643
These data indicate that the de novo synthesized SP in the lesioned primary afferent neurons may be involved in an augmentation of excitability in the dorsal column-medial lemniscus sensory pathway. This hyperexcitability may play a role in the pathogenesis of abnormal neuropathic sensations following peripheral nerve injury.

Long-term Outcome After Whiplash Injury: A 2-year Follow-up Considering Features
of Injury Mechanism and Somatic, Radiologic, and Psychosocial Findings
Medicine (Baltimore) 1995 (Sep);   74 (5):   281–297
Previous studies, however, focused on somatic symptoms on the one hand or considered only psychological or neuropsychological variables on the other hand, often in loosely defined or selected groups of patients. No study so far has analyzed the long-term outcome in a nonselected group of patients using a clear injury definition considering patient history; somatic, radiologic, and neuropsychological findings; and features of the injury mechanisms assessed soon after trauma and during follow-up. With regard to baseline findings the following significant differences were found (on this cohort): Symptomatic patients were older, had higher incidence of rotated or inclined head position at the time of impact, had higher prevalence of pretraumatic headache, showed higher intensity of initial neck pain and headache, complained of a greater number of symptoms, had a higher incidence of symptoms of radicular deficit and higher average scores on a multiple symptom analysis, and displayed more degenerative signs (osteoarthrosis) on X ray.

Validity of Five Common Manual Neck Pain–provoking Tests
Scand J Rehabil Med 1995 (Sep);   27 (3):   131–136
This study revealed that palpation for pain was the most reproducable and accurate assessment of reported neck pain. They state: "Palpation over the facet joints in the cervical spine was found to be the most appropriate screening test to corroborate the replies in self–reported questionnaires on dysfunctions of the neck."

Interexaminer Reliability of Palpation for Cervical Spine Tenderness
Scand J Rehabil Med 1995 (Sep);   27 (3):   131–136
As with the study above, spinal palpation for tenderness was found to ba a valid examinatioin tool. They stated: "In this population, palpation for cervical spine tenderness is a highly reliable examination tool."

The Prevalence of Chronic Cervical Zygapophysial Joint Pain After Whiplash
Spine Journal 1995 (Jan 1);   20 (1):   20–26
In a significant proportion of patients with whiplash, chronic, refractory neck pain develops. Provisional data suggest many of these patients have zygapophysial joint pain, but the diagnosis has been established by single, uncontrolled diagnostic block. In this study, fifty consecutive, referred patients with chronic neck pain after whiplash injury were studied using double-blind, controlled, diagnostic blocks of the cervical zygapophysial joints. On separate occasions, the joint was blocked with either lignocaine or bupivacaine in random order. A positive diagnosis was made only if both blocks relieved the patient's pain and bupivacaine provided longer relief. In this population, cervical zygapophysial joint pain was the most common source of chronic neck pain after whiplash.

Contribution of Central Neuroplasticity to Pathological Pain:
Review of Clinical and Experimental Evidence
Pain 1993 (Mar);   52 (3):   259–285
Peripheral tissue damage or nerve injury often leads to pathological pain processes, such as spontaneous pain, hyperalgesia and allodynia, that persist for years or decades after all possible tissue healing has occurred. Although peripheral neural mechanisms, such as nociceptor sensitization and neuroma formation, contribute to these pathological pain processes, recent evidence indicates that changes in central neural function may also play a significant role.

Cartilage Maintenance in Osteoarthritis: Interaction of Cytokines, NSAID
and Prostaglandins in Articular Cartilage Damage and Repair
J Rheumatol Suppl 1991 (Mar);   28:   30–37
The structural integrity of the matrix of human articular cartilage is maintained by a dynamic equilibrium between synthesis and degradation. In osteoarthritis (OA), synthesis may be inhibited by the presence of subnanogram quantities of the cytokine interleukin 1 (IL-1), leading in the longterm to loss of matrix and susceptibility to mechanical damage. IL-1 may also inhibit the potential for repair processes to take place in this cartilage if continued synthesis and secretion of the cytokine occurs. Evidence is presented that animal and human cartilages are sensitive to the action of certain nonsteroidal antiinflammatory drugs (NSAID) in inhibiting the synthesis of cartilage proteoglycan and also diminishing the repair activity of cartilage recovering after IL-1.

Pain Costs Employers Billions in Lost Wages for Sick Days
Business and Health Magazine
American employers lose billions of dollars each year because pain keeps workers off the job, according to a 1996 survey by Louis Harris & Associates. "Pain is a major cause of absenteeism in the workforce," said Robert Leitman, Executive Vice President, Louis Harris. "In 1995, pain caused 50 million lost work days at a cost to employers of at least $3 billion in wages for employees who called in sick."

In The Opinion of Drug Companies

Pain and Older Americans Survey
The National Council on the Aging
One in five Americans over age 60 takes medication to control pain that lasts for six months or more (chronic pain). This represents 18% of Americans in this age group, or 7.5 million people.

Nearly One in Five Seniors Takes Medication for Chronic Pain
The National Council on the Aging
Nearly one in five Americans over age 60 regularly takes medication for chronic pain, according to a 1997 survey. The majority of the 7.5 million seniors who take medication for chronic pain say their medications are effective, but one in four suffers from side effects caused by the drugs. Nearly 40 percent say doctors don't discuss possible side effects of pain medication they prescribe, and half say doctors don't warn them about potential drug interactions.

Pain Is Undertreated in Seniors, Experts Say
The National Council on the Aging
Safer, more effective therapy could improve the quality of life of older Americans who take pain medication. This conclusion was shared by pain specialists and experts on aging who reviewed findings of a survey released in June 1997 by The National Council on the Aging, Inc. (NCOA). The survey, conducted by Louis Harris & Associates on behalf of NCOA, examined how pain and its treatment affect the lives of the nearly one in five Americans over age 60 who regularly take pain medication for arthritis and other chronic pain conditions.

End of Opinion