MD, PhD, MAE, FMedSci, FRSB, FRCP, FRCPEd.

chiropractic

We have heard often, here and elsewhere, that chiropractic is neither effective nor safe. But now I found that it is not useless after all!!! It is an effective preventative measure against infections like the common cold and the flu.

You find this hard to believe? But it must be true!

It is the message given to chiropractors on this website:

Chiropractic care raises your body’s natural resistance to disease by removing serious interference to its proper function, vertebral subluxations. For that reason, it’s important to explain to clients that their lymphatic system is basically their body’s drainage system. Lymph is a clear fluid composed of immune cells and the greater lymphatic system is made up of a network of ducts and lymph nodes that help filter out viruses, bacteria, and other harmful elements. Remind your patients that when they go to a medical doctor and complain of a cold or the flu, the first thing he or she checks is their lymph glands, feeling for enlarged lymph nodes on the neck under the jaw. Enlarged nodes, or swollen glands as we often call them, are a sign that the lymphatic system is actively fighting an infection or imbalance.
 
Here’s where chiropractic care comes in: when the body is healthy and working correctly, the bad things your lymph nodes collects drains out through the lymph ducts, some of which are located along the spine and in the neck. But when the neck and spine are out of alignment from muscle tension, a musculoskeletal condition or other injury, those lymph ducts can become blocked and congested. Fortunately, chiropractic adjustments restore the neck and spine to proper alignment, taking pressure off of the congested lymph ducts. That allows the lymphatic system to start flowing and working correctly again, naturally decongesting and helping your body’s immune system to work properly in the fight against colds, flu, and illness.
 
It’s hard to quantify the health benefits of a strong immune system, but one recent study found that patients who had chiropractic adjustments had a 200-400% stronger immune system than those who weren’t adjusted. Another study published in the Journal of Vertebral Subluxation Research showed that regular chiropractic care resulted in a 15% average decrease in the incidence of colds and the flu. For that reason, regular chiropractic adjustment and lymphatic massage will help keep a patient’s immune system strong and functioning optimally, and even will help minimize the symptoms and speed recovery once a patient already comes down with the flu.

And you thought that chiropractors had all but given up the notion of ‘subluxation’? No, they haven’t!

Subluxations are real, alive and kicking!

The germ theory of disease is false!

Chiropractic adjustments are the only cure and prevention!

Immunisations are just poison in your body!

What, I have not convinced you? Then you are not a chiropractor, perhaps?

You say they make numerous such claims because it keeps them in clover? Oh, you are cynical – shame on you!

Chiropractors and osteopaths have long tried to convince us that spinal manipulation and mobilisation are the best we can do when suffering from neck pain. But is this claim based on good evidence?

This recent update of a Cochrane review was aimed at assessing the effects of manipulation or mobilisation alone compared with those of an inactive control or another active treatment on pain, function, disability, patient satisfaction, quality of life and global perceived effect in adults experiencing neck pain with or without radicular symptoms and cervicogenic headache (CGH) at immediate- to long-term follow-up, and when appropriate, to assess the influence of treatment characteristics (i.e. technique, dosage), methodological quality, symptom duration and subtypes of neck disorder on treatment outcomes.

Review authors searched the following computerised databases to November 2014 to identify additional studies: the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE, EMBASE and the Cumulative Index to Nursing and Allied Health Literature (CINAHL). They also searched ClinicalTrials.gov, checked references, searched citations and contacted study authors to find relevant studies.

Randomised controlled trials (RCTs) undertaken to assess whether manipulation or mobilisation improves clinical outcomes for adults with acute/subacute/chronic neck pain were included in this assessment.

Two review authors independently selected studies, abstracted data, assessed risk of bias and applied Grades of Recommendation, Assessment, Development and Evaluation (GRADE) methods (very low, low, moderate, high quality). The authors calculated pooled risk ratios (RRs) and standardised mean differences (SMDs).

Fifty-one trials with a total of 2920 participants could be included. The findings are diverse. Cervical manipulation versus inactive control: For subacute and chronic neck pain, a single manipulation (three trials, no meta-analysis, 154 participants, ranged from very low to low quality) relieved pain at immediate- but not short-term follow-up. Cervical manipulation versus another active treatment: For acute and chronic neck pain, multiple sessions of cervical manipulation (two trials, 446 participants, ranged from moderate to high quality) produced similar changes in pain, function, quality of life (QoL), global perceived effect (GPE) and patient satisfaction when compared with multiple sessions of cervical mobilisation at immediate-, short- and intermediate-term follow-up. For acute and subacute neck pain, multiple sessions of cervical manipulation were more effective than certain medications in improving pain and function at immediate- (one trial, 182 participants, moderate quality) and long-term follow-up (one trial, 181 participants, moderate quality). These findings are consistent for function at intermediate-term follow-up (one trial, 182 participants, moderate quality). For chronic CGH, multiple sessions of cervical manipulation (two trials, 125 participants, low quality) may be more effective than massage in improving pain and function at short/intermediate-term follow-up. Multiple sessions of cervical manipulation (one trial, 65 participants, very low quality) may be favoured over transcutaneous electrical nerve stimulation (TENS) for pain reduction at short-term follow-up. For acute neck pain, multiple sessions of cervical manipulation (one trial, 20 participants, very low quality) may be more effective than thoracic manipulation in improving pain and function at short/intermediate-term follow-up. Thoracic manipulation versus inactive control: Three trials (150 participants) using a single session were assessed at immediate-, short- and intermediate-term follow-up. At short-term follow-up, manipulation improved pain in participants with acute and subacute neck pain (five trials, 346 participants, moderate quality, pooled SMD -1.26, 95% confidence interval (CI) -1.86 to -0.66) and improved function (four trials, 258 participants, moderate quality, pooled SMD -1.40, 95% CI -2.24 to -0.55) in participants with acute and chronic neck pain. A funnel plot of these data suggests publication bias. These findings were consistent at intermediate follow-up for pain/function/quality of life (one trial, 111 participants, low quality). Thoracic manipulation versus another active treatment: No studies provided sufficient data for statistical analyses. A single session of thoracic manipulation (one trial, 100 participants, moderate quality) was comparable with thoracic mobilisation for pain relief at immediate-term follow-up for chronic neck pain. Mobilisation versus inactive control: Mobilisation as a stand-alone intervention (two trials, 57 participants, ranged from very low to low quality) may not reduce pain more than an inactive control. Mobilisation versus another active treatment: For acute and subacute neck pain, anterior-posterior mobilisation (one trial, 95 participants, very low quality) may favour pain reduction over rotatory or transverse mobilisations at immediate-term follow-up. For chronic CGH with temporomandibular joint (TMJ) dysfunction, multiple sessions of TMJ manual therapy (one trial, 38 participants, very low quality) may be more effective than cervical mobilisation in improving pain/function at immediate- and intermediate-term follow-up. For subacute and chronic neck pain, cervical mobilisation alone (four trials, 165 participants, ranged from low to very low quality) may not be different from ultrasound, TENS, acupuncture and massage in improving pain, function, QoL and participant satisfaction at immediate- and intermediate-term follow-up. Additionally, combining laser with manipulation may be superior to using manipulation or laser alone (one trial, 56 participants, very low quality).

Confused? So am I!

In my view, these analyses show that the quality of most studies is wanting and the evidence is weak – much weaker than chiropractors and osteopaths try to make us believe. It seems to me that no truly effective treatments for neck pain have been discovered and that therefore manipulation/mobilisation techniques are as good or as bad as most other options.

In such a situation, it might be prudent to first investigate the causes of neck pain in greater detail  and subsequently determine the optimal therapies for each of them. Neck pain is a SYMPTOM, not a disease! And it is always best to treat the cause of a symptom rather than pretending we know the cause as chiropractors and osteopaths often do.

The authors of the Cochrane review seem to agree with this view at least to some extent. They conclude that although support can be found for use of thoracic manipulation versus control for neck pain, function and QoL, results for cervical manipulation and mobilisation versus control are few and diverse. Publication bias cannot be ruled out. Research designed to protect against various biases is needed. Findings suggest that manipulation and mobilisation present similar results for every outcome at immediate/short/intermediate-term follow-up. Multiple cervical manipulation sessions may provide better pain relief and functional improvement than certain medications at immediate/intermediate/long-term follow-up. Since the risk of rare but serious adverse events for manipulation exists, further high-quality research focusing on mobilisation and comparing mobilisation or manipulation versus other treatment options is needed to guide clinicians in their optimal treatment choices.

The call for further research is, of course, of no help for patients who are suffering from neck pain today. What would I recommend to them?

My advice is to be cautious:

  • Consult your doctor and try to get a detailed diagnosis.
  • See a physiotherapist and ask to be shown exercises aimed at reducing the pain and preventing future episodes.
  • Do these exercises regularly, even when you have no pain.
  • Make sure you do whatever else might be needed in terms of life-style changes (ergonomic work place, correct sleeping arrangements, etc.).
  • If you are keen on seeing an alternative practitioner for manual therapy, consult a osteopath rather than a chiropractor; the former tend to employ techniques which are less risky than the latter.
  • Avoid both chiropractors and long-term medication for neck pain.

No, I kid you not!

This abstract was actually published in the leading chiro-journal. The authors include three professors from the Canadian Memorial Chiropractic College, Research, Toronto, Canada. Its title is impressive but made my alarm bells ring a bit:

A Randomized Pragmatic Clinical Trial of Chiropractic Care for Headaches With and Without a Self-Acupressure Pillow.

And the actual texts does not disappoint those looking for of pure pseudo-science:

The purpose of this study was to determine if the addition of a self-acupressure pillow (SAP) to typical chiropractic treatment results in significantly greater improvement in tension-type and cervicogenic headache sufferers.

METHODS:

A pragmatic randomized clinical trial was conducted in a chiropractic college teaching clinic. Thirty-four subjects, including tension-type and cervicogenic headache sufferers, 21 to 60 years of age, male or female, completed the study. Group A (n = 15) received typical chiropractic care only (manual therapy and exercises), and group B (n = 19) received typical chiropractic care with daily home use of the SAP. The intervention period was 4 weeks. The main outcome measure was headache frequency. Satisfaction and relief scores were obtained from subjects in the SAP group. Analysis of variance was used to analyze the intergroup comparisons.

RESULTS:

Owing to failure of randomization to produce group equivalence on weekly headache frequency, analysis of covariance was performed showing a trend (P = .07) favoring the chiropractic-only group; however, this was not statistically significant. Group A obtained a 46% reduction of weekly headache frequency (t = 3.1, P = .002; d = 1.22). The number of subjects in group A achieving a reduction in headaches greater than 40% was 71%, while for group B, this was 28%. The mean benefit score (0-3) in group B of the use of the SAP was 1.2 (.86). The mean satisfaction rating of users of the SAP was 10.4 (2.7) out of 15 (63%).

CONCLUSION:

This study suggests that chiropractic care may reduce frequency of headaches in patients with chronic tension-type and cervicogenic headache. The use of a self-acupressure pillow (Dr Zaxx device) may help those with headache and headache pain relief as well as producing moderately high satisfaction with use.

Where to begin?

Perhaps it is best, if I simply concentrated on the bizarre research question: is chiropractic care plus the largely uncontrolled use of an ‘acupressure cushion’ better than chiropractic care alone? To savour the lunacy of it, we need to consider that:

  • chiropractic is not plausible;
  • chiropractic care is not proven to be effective for headaches;
  • acupressure is not plausible;
  • acupressure is not proven to be effective;
  • a self-administered acupressure cushion is also unproven and even less plausible;

This, I fear, renders the study one of the most nonsensical trials I have seen for a very long time. To make the bonanza in pseudo-science complete, the article is supplemented with a most bizarre conclusion about the effectiveness of chiropractic (which, of cause, cannot be examined in a trial of chiro vs chiro).

All this leads me to fear that:

  • the best journal of chiropractic is rubbish;
  • a professorship in a chiro school may not mean that the professor has the slightest idea about research methodology;
  • chiropractors will try to squeeze a conclusion that is favourable for their trade even out of a dead horse.

The ‘INTERNATIONAL CHIROPRACTIC PEDIATRIC ASSOCIATION’ (ICPA) is, according to their website, ‘a nonprofit organization whose mission is to advance chiropractic by establishing evidence informed practice, supporting excellence in professional skills and delivering educational resources to the public. It fulfills this mission by engaging and serving family chiropractors worldwide through research, training and public education.’

It fulfils its mission by, amongst other things, tweeting links to other pro-chiropractic activities. It is via such a tweet that I recently found the Pathways to Family Wellness (PFW). This is a quarterly print and digital magazine whose mission is to support you and your family’s quest for wellness.

This sounds exciting, I thought, and decided to have a closer look. I found that, according to its website, the magazine ‘collaborates with consciousness leaders, cutting-edge scientists and researchers, families on their conscious path, holistic practitioners and dynamic non-profit organizations to bring the most current insights into wellness to our readers.’

The Executive Editor and Publisher of PFW is Dr. Jeanne Ohm. She has ‘practiced family wellness care since 1981 with her husband, Dr. Tom. They have six children who were all born at home and are living the chiropractic family wellness lifestyle. Ohm is an instructor, author, and innovator. Her passion is: training DC’s with specific techniques for care in pregnancy, birth & infancy, forming national alliances for chiropractors with like-minded perinatal practitioners, empowering mothers to make informed choices, and offering pertinent patient educational materials.’

My suspicion that this is an outlet of chiropractic nonsense is confirmed as I read an article by Bobby Doscher, D.C., N.D. on the subject of chiropractic treatment for children with neurological problems. The article itself is merely promotional and therefore largely irrelevant. But one short passage is interesting nevertheless, I thought:

Chiropractic Based on Scientific Fact

Since its beginning, chiropractic has been based on the scientific fact that the nervous system controls the function of every cell, tissue, organ and system of your body. While the brain is protected by the skull, the spinal cord is more vulnerable, covered by 24 moving vertebrae. When these bones lose their normal motion or position, they can irritate the nervous system. This disrupts the function of the tissues or organs these nerves control; this is called vertebral subluxation complex.

I thought this was as revealing as it was hilarious. Since such nonsensical notions are ubiquitous in the chiropractic literature, I am tempted to conclude that most chiropractors believe this sort of thing themselves. This makes them perhaps more honest but also more of a threat: sincere conviction renders a quack not less but more dangerous.

If you start reading the literature on chiropractic, you are bound to have surprises. The paucity of rigorous and meaningful research is one of them. I am constantly on the look-out for such papers but am regularly frustrated. Over the years, I got the impression that chiropractors tend to view research as an exercise in promotion – that is promotion of their very own trade.

Take this article, for instance. It seems to be a systematic review of chiropractic for breastfeeding. This is an interesting indication; remember: in 1998, Simon Singh wrote in the Guardian this comment “The British Chiropractic Association claims that their members can help treat children with colic, sleeping and feeding problems, frequent ear infections, asthma and prolonged crying, even though there is not a jot of evidence. This organisation is the respectable face of the chiropractic profession and yet it happily promotes bogus treatments.” As a consequence, he got sued for libel; he won, of course, but ever since, chiropractors across the world are trying to pretend that there is some evidence for their treatments after all.

The authors of the new review searched Pubmed [1966-2013], Manual, Alternative and Natural Therapy Index System (MANTIS) [1964-2013] and Index to Chiropractic Literature [1984-2013] for the relevant literature. The search terms utilized “breastfeeding”, “breast feeding”, “breastfeeding difficulties”, “breastfeeding difficulty”, “TMJ dysfunction”, “temporomandibular joint”, “birth trauma” and “infants”, in the appropriate Boolean combinations. They also examined non-peer-reviewed articles as revealed by Index to Chiropractic Literature and conducted a secondary analysis of references. Inclusion criteria for their review included all papers on breastfeeding difficulties regardless of peer-review. Articles were excluded if they were not written in the English language.

The following articles met the inclusion criteria: 8 case reports, 2 case series, 3 cohort studies and 6 manuscripts (5 case reports and a case series) that involved breastfeeding difficulties as a secondary complaint. The findings revealed a “theoretical and clinical framework based on the detection of spinal and extraspinal subluxations involving the cervico-cranio-mandibular complex and assessment of the infant while breastfeeding.”

Based on these results, the authors concluded that chiropractors care of infants with breastfeeding difficulties by addressing spinal and extraspinal subluxations involving the cervico-cranio-mandibular complex.

Have I promised too much?

I had thought that chiropractors had abandoned the subluxation nonsense! Not really, it seems.

I had thought that systematic reviews are about evidence of therapeutic effectiveness! Not in the weird world of chiropractic.

I would have thought that we all knew that ‘chiropractors care of infants with breastfeeding difficulties’ and do not need a review to confirm it! Yes, but what is good for business deserves another meaningless paper.

I would have thought that the conclusions of scientific articles need to be appropriate and based on the data provided! It seems that, in the realm of chiropractic, these rules do not apply.

An appropriate conclusion should have stated something like THERE IS NO GOOD EVIDENCE THAT CHIROPRACTIC CARE AIDS BREASTFEEDING. But that would have been entirely inappropriate from the chiropractic point of view because it is not a conclusion that promotes the sort of quackery most chiropractors rely upon for a living. And the concern over income is surely more important than telling the truth!

Hurray, I can hear the Champagne corks popping: this month is ‘National Chiropractic Months’ in the USA – a whole month! This has depleted my stock of the delicious fizz already in the first three days.

Now that my bottles are empty (is there a chiropractic cure for a hang-over?), I must find other ways to celebrate. How about a more sober look at what has been published in the medical literature on chiropractic during the last few days?

A quick look into Medline identifies several articles of interest. The very first one is a case-report:

Spinal epidural hematoma (SEH) occurring after chiropractic spinal manipulation therapy (CSMT) is a rare clinical phenomenon. Our case is unique because the patient had an undiagnosed cervical spinal arteriovenous malformation (AVM) discovered on pathological analysis of the evacuated hematoma. Although the spinal manipulation likely contributed to the rupture of the AVM, there was no radiographic evidence of the use of excessive force, which was seen in another reported case. As such, patients with a known AVM who have not undergone surgical intervention should be cautioned against symptomatic treatment with CSMT, even if performed properly. Regardless of etiology, SEH is a surgical emergency and its favorable neurological recovery correlates inversely with time to surgical evacuation.

This is important, I think, in more than one way. Many chiropractors simply deny that their manipulations cause serious complications of this nature. Yet such cases are being reported with depressing regularity. Other chiropractors claim that excessive force is necessary to cause the damage. This paper seems to refute this notion quite well, I think.

But let’s not be inelegant and dwell on this unpleasant subject; it might upset chiros during their month of celebration.

The next article fresh from the press is a survey – chiropractors are very fond of this research tool, it seems. It produced a lot of intensely boring data – except for one item that caught my eye: the authors found that ‘virtually all Danish chiropractors working in the primary sector made use of manipulation as one of their treatment modalities.’

Why is that interesting? Whenever I point out that there is no good evidence that chiropractic manipulations generate more good than harm, chiropractors tend to point out that they do so much more than that. Manipulations are not administered to all their patients, they say. This survey is a reminder (there is plenty more evidence on this issue) of the fact that the argument is not very convincing.

Another survey which has just been published in time for the ‘celebratory month’ is worth mentioning. It reports the responses of patients to questions about chiropractic by providing the ‘positive angle’, e.g.: ‘Most (61.4%) respondents believed that chiropractic care was effective at treating neck and back pain…’ Just for the fun of it, I thought it might be worth doing the opposite: 39% did not believe that chiropractic care was effective at treating neck and back pain… If we use this approach, the new survey also indicates that about half of the respondents did not think chiropractors were trustworthy, and 86% have not consulted a chiropractor within the last year.

Oh, so sorry – I did not mean to spoil the celebrations! Better move on then!

A third survey assessed the attitudes of Canadian obstetricians towards chiropractic. Overall, 70% of respondents did not hold a positive views toward chiropractic, 74% did not agree that chiropractic had a role in treatment of non-musculoskeletal conditions, 60% did not refer at least some patients for chiropractic care each year, and comments of the obstetricians revealed concerns regarding safety of spinal manipulation and variability among chiropractors.

And now I better let you get on with your well-deserved celebrations and look for another bottle!

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Much has been written on this blog and elsewhere about the risks of spinal manipulation. It relates almost exclusively to the risks of manipulating patients’ necks. There is far less on the safety of thrust joint manipulation (TJM) when applied to the thoracic spine. A new paper focusses on this specific topic.

The purpose of this review was to retrospectively analyse documented case reports in the literature describing patients who had experienced severe adverse events (AE) after receiving TJM to their thoracic spine.

Case reports published in peer reviewed journals were searched in Medline (using Ovid Technologies, Inc.), Science Direct, Web of Science, PEDro (Physiotherapy Evidence Database), Index of Chiropractic literature, AMED (Allied and Alternative Medicine Database), PubMed and the Cumulative Index to Nursing and Allied Health (CINHAL) from January 1950 to February 2015.

Case reports were included if they: (1) were peer-reviewed; (2) were published between 1950 and 2015; (3) provided case reports or case series; and (4) had TJM as an intervention. The authors only looked at serious complications, not at the much more frequent transient AEs after spinal manipulations. Articles were excluded if: (1) the AE occurred without TJM (e.g. spontaneous); (2) the article was a systematic or literature review; or (3) it was written in a language other than English or Spanish. Data extracted from each case report included: gender; age; who performed the TJM and why; presence of contraindications; the number of manipulation interventions performed; initial symptoms experienced after the TJM; as well as type of severe AE that resulted.

Ten cases, reported in 7 articles, were reviewed. Cases involved females (8) more than males (2), with mean age being 43.5 years. The most frequent AE reported was injury (mechanical or vascular) to the spinal cord (7/10); pneumothorax and hematothorax (2/10) and CSF leak secondary to dural sleeve injury (1/10) were also reported.

The authors point out that there were only a small number of case reports published in the literature and there may have been discrepancies between what was reported and what actually occurred, since physicians dealing with the effects of the AE, rather than the clinician performing the TJM, published the cases.

The authors concluded that serious AE do occur in the thoracic spine, most commonly, trauma to the spinal cord, followed by pneumothorax. This suggests that excessive peak forces may have been applied to thoracic spine, and it should serve as a cautionary note for clinicians to decrease these peak forces.

These are odd conclusions, in my view, and I think I ought to add a few points:

  • As I stated above, the actual rate of experiencing AEs after having chiropractic spinal manipulations is much larger; it is around 50%.
  • Most complications on record occur with chiropractors, while other professions are far less frequently implicated.
  • The authors’ statement about ‘excessive peak force’ is purely speculative and is therefore not a legitimate conclusion.
  • As the authors mention, it is  hardly ever the chiropractor who reports a serious complication when it occurs.
  • In fact, there is no functioning reporting scheme where the public might inform themselves about such complications.
  • Therefore their true rate is anyone’s guess.
  • As there is no good evidence that thoracic spinal manipulations are effective for any condition, the risk/benefit balance for this intervention fails to be positive.
  • Many consumers believe that a chiropractor will only manipulate in the region where they feel pain; this is not necessarily true – they will manipulate where they believe to diagnose ‘SUBLUXATIONS’, and that can be anywhere.
  • Finally, I would not call a review that excludes all languages other than English and Spanish ‘systematic’.

And my conclusion from all this? THORACIC SPINAL MANIPULATIONS CAN CAUSE CONSIDERABLE HARM AND SHOULD BE AVOIDED.

Regular readers of this blog will be aware of the many bogus claims made by chiropractors. One claim, however, namely the one postulating chiropractors can effectively treat low back pain with spinal manipulation, is rarely viewed as being bogus. Chiropractors are usually able to produce evidence that does suggest the claim to be true, and therefore even most critics of chiropractic back off on this particular issue.

But is the claim really true?

A recent trial might provide the answer.

The purpose of this study was to compare the effectiveness of chiropractic spinal manipulative therapy (cSMT) to a sham intervention on pain (Visual Analogue Scale, SF-36 pain subscale), disability (Oswestry Disability Index), and physical function (SF-36 subscale, Timed Up and Go) by performing a randomized placebo-controlled trial at 2 Veteran Affairs Clinics.

Older veterans (≥ 65 years of age) who were naive to chiropractic were recruited. A total of 136 who suffered from chronic low back pain (LBP) were included in the study – with 69 being randomly assigned to cSMT and 67 to the sham intervention. Patients were treated twice per week for 4 weeks. The outcomes were assessed at baseline, 5, and 12 weeks post baseline.

Both groups demonstrated significant decrease in pain and disability at 5 and 12 weeks. At 12 weeks, there was no significant difference in pain and a statistically significant decline in disability scores in the cSMT group when compared to the control group. There were no significant differences in adverse events between the groups.

The authors concluded that cSMT did not result in greater improvement in pain when compared to our sham intervention; however, cSMT did demonstrate a slightly greater improvement in disability at 12 weeks. The fact that patients in both groups showed improvements suggests the presence of a nonspecific therapeutic effect.

Hold on, I hear you say, this does not mean that cSMT is a placebo in the treatment of LBP! There are other studies that yield positive results. Let’s not cherry-pick our evidence!

Absolutely correct! To avoid cherry-picking, lets see what the current Cochrane review tells us about cSMT and chronic LBP. Here is the conclusion of this review based on 26 RCTs: High quality evidence suggests that there is no clinically relevant difference between SMT and other interventions for reducing pain and improving function in patients with chronic low-back pain.

Convinced?

In the realm of alternative medicine, we encounter many therapeutic claims that beggar belief. This is true for most modalities but perhaps for none more than chiropractic. Many chiropractors still adhere to Palmer’s gospel of the ‘inate’, ‘subluxation’ etc. and thus they believe that their ‘adjustments’ are a cure all. Readers of this blog will know all that, of course, but even they might be surprised by the notion that a chiropractic adjustment improves the voice of a choir singer.

This, however, is precisely the ‘hypothesis’ that was recently submitted to an RCT. To be precise, the study investigated the effect of spinal manipulative therapy (SMT) on the singing voice of male individuals.

Twenty-nine subjects were selected among male members of a local choir. Participants were randomly assigned to two groups: (A) a single session of chiropractic SMT and (B) a single session of non-therapeutic transcutaneous electrical nerve stimulation (TENS). Recordings of the singing voice of each participant were taken immediately before and after the procedures. After a 14-day wash-out period, procedures were switched between groups: participants who underwent SMT on the first occasion were now subjected to TENS and vice versa. Recordings were assessed via perceptual audio and acoustic evaluations. The same recording segment of each participant was selected. Perceptual audio evaluation was performed by a specialist panel (SP). Recordings of each participant were randomly presented thus making the SP blind to intervention type and recording session (before/after intervention). Recordings compiled in a randomized order were also subjected to acoustic evaluation.

No differences in the quality of the singing on perceptual audio evaluation were observed between TENS and SMT.

The authors concluded that no differences in the quality of the singing voice of asymptomatic male singers were observed on perceptual audio evaluation or acoustic evaluation after a single spinal manipulative intervention of the thoracic and cervical spine.

Laughable? Yes!

There is nevertheless an important point to be made here, I feel: some claims are just too silly to waste resources on. Or, to put it in more scientific terms, hypotheses require much more than a vague notion or hunch.

To set up, conduct and eventually publish an RCT as above requires expertise, commitment, time and money. All of this is entirely wasted, if the prior probability of a relevant result approaches zero. In the realm of alternative medicine, this is depressingly often the case. In the final analysis, this suggests that all too often research in this area achieves nothing other than giving science a bad name.

‘Doctor’ Don Harte is former medical student who prematurely left medical school and currently works as a chiropractor in California. He, has served on the Boards of the World Chiropractic Association and the Council on Chiropractic Practice. He has published extensively; on his website, he offers a list of his articles:

His website also reveals that Harte views chiropractic as a ‘cure all’ and believes that the “Vertebral Subluxation Complex (VSC) is THE most serious threat to your health and well-being.”

Harte is not impressed with conventional medicine: “Virtually everyone has lost loved ones to medical mistakes and indifference. I, myself, count my father, my favorite uncle and two cousins amongst this unnecessary medical death toll. Though people concoct all kinds of charges against Chiropractic, nobody knows of any deaths from Chiropractic, because there just aren’t any. You might want to read the article that I wrote on this subject in the San Francisco Chronicle, “Where is the Danger in Chiropractic.”

In particular, Harte is no friend of immunisation. Here are some of the things he has been quoted as saying recently about the subject:

  • He charged the media with “an evil bigotry” in relation to vaccination.
  • He said that “The mass media refuses to acknowledge the existence of vaccine-injured children. This is quite a trick, since we are talking millions of children.”
  • He explained that “their whole con game relies on fear, trying to convince you that you and your children have nothing inside to protect them from all those evil germs. That you need their HOLY WATER, the vaccines, or you will die.” Once again, Harte charged the California Governor and the legislature “as Destroyers of the family, as Enemies of liberty, as CHEMICAL CHILD MOLESTERS.”
  • He claimed that “His (Mr J Coleman’s) son, Otto, who was paralyzed by a vaccine reaction, was there, in his wheelchair; as were other vaccine-damaged children. Some participants held up photos of their children who had died from vaccines.” And he said, “There were no photos of these children, nor any mention of them in news accounts. Establishment media refuses to put a human face on the suffering caused by vaccinations. I don’t know whether to call them ‘chicken’ or ‘evil.’”
  • Harte also stated that “The claim that non-vaccinated children are a threat to Rhett has ZERO scientific basis. First of all, less-vaccinated and non-vaccinated kids tend to be healthier. And more specifically, children recently vaccinated with live virus vaccines will shed viruses, and thus, be contagious, for up to 28 days.”
  • “Here we have a case,” explained Harte, “of one boy held up as a potential victim of unvaccinated or less-vaccinated children, who has had, in reality, no harm done by those children. The millions of children who have endured great harm, up to and including paralysis and death, are ignored. This is not science, nor is it reputable news reporting nor reputable public policy. It is naked propaganda, paid for by Big Pharma.”

It seems that Harte is an altogether dangerous person.

Of course, chiropractors will (yet again) claim that Harte does in no way stand for chiropractic as a whole and that chiropractors are just as appalled by such dangerous anti-vaccination propaganda as we are. They will say he is just ‘a rotten apple’ within a mostly laudable profession.

But is that true? What have the professional bodies of chiropractic done against him and his hazardous views? Have they excluded or reprimanded him, or requested that he seeks treatment for what seems to be rampant paranoia?

The answer, I am afraid, is NO! What they did do instead was to name him, in 2006, as “Chiropractor of the Year” – an honour bestowed on him by the World Chiropractic Alliance.

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