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Sorting crayons: is manual therapy an effective treatment for low back pain?

Posted on January 7, 2014 by Andrew Young

Evidence Reviews
back pain

My wife loves life. She loves playing tennis, reading good books, drinking coffee in the mornings and cooking delicious food (which works out quite well for me). She eats healthy, exercises several times a week, and has never had any serious health concerns. My wife also has recurring low back pain.

My initial reaction to her complaint of low back pain probably sounded like: “What!?! People like you are not supposed to have back pain at 24!”

As it turns out, frequently recurring low back pain without a specific origin or injury is actually quite common. In medical terminology, this is called chronic non-specific low back pain. Research has shown that as many as 60-80% of active people in developed countries incur low back pain at least once in their lifetime.

Treatments for low back pain are as diverse as the different shades of Crayola crayons (I’m talking about the box of 96 crayons with built-in sharpener). One specific type of treatment that has been used for relief of low back pain is manual therapy. Manual therapy is an umbrella term used to describe any type of “hands-on” treatment administered by a health professional. Examples of manual therapy include joint manipulation (usually associated with a chiropractic adjustment when you hear the joints in your spine “pop”), joint mobilization (gentle oscillating movements administered at a joint), and a variety of stretches facilitated by a health care professional. Active exercise is another type of treatment commonly used in the treatment of low back pain. Active exercise is another umbrella term, and it describes any exercises performed to increase strength or endurance of your muscles. When treating low back pain, active exercises usually target your abdominals and back muscles (also referred to as your “core”).

One particular research study I came across specifically tested the effectiveness of manual therapy in combination with active exercise in the treatment of chronic non-specific low back pain.

Participants

The researchers recruited forty-two patients with chronic non-specific low back pain, and split them into two treatment groups.

Treatment

The first treatment group, we will call them “Group A”, received manual therapy in combination with active exercise for 8 therapy sessions over a four to eight week period. The participants were also instructed to complete specific active exercises assigned to them by a skilled physical therapist.

The second treatment group, we will call them “Group B”, received detuned ultrasound in combination with active exercise. Ultrasound is a type of treatment that is used by physical therapists to treat a variety of different impairments a patient may have. Detuned ultrasound is ultrasound that is not actually turned on, however as far as the patient knows the ultrasound machine is humming right along. The reason this was included as a part of the study is to see if even the idea of receiving a treatment improved the patient’s symptoms. Sometimes this concept is referred to as the placebo effect.

What was measured?

The researcher’s decided to measure a number of things in this study. Outcome measurements included pain intensity, disability caused by low back pain, fear-avoidance beliefs (the participants’ opinions on how physical activity and work affect their low back pain), and the endurance of abdominal and back muscles.

Results!

  1. Patients in group A (received manual therapy and active exercise) displayed a greater  decrease in pain immediately following treatment when compared to group B (ultrasound and active exercise).
  2. Patients in group A displayed less physical disability following treatment when compared to group B.

Overall Impressions

When looking at this study as a whole, there is a lot to like. First, the overall number of participants in the study was great at 42. Patients were also randomly selected and divided into treatment groups with a good number of overall participants. As the number of participants in a study increases, the results gain more weight. It is also important that the participants are randomly divided between groups so that they are similar prior to treatment. One area in which the study could have improved was in the recruitment of their participants. Every participant in the study was recruited from the same rheumatology hospital in Switzerland. This could mean that the participants in this study do not accurately represent individuals with chronic non-specific low back pain as a whole. In general, however, this study was very well done and offered very few weaknesses.

…And The Survey Says!

(Kudos to all of you who understand that reference)

This study suggests that the use of manual therapy with active exercise as an intervention for chronic non-specific low back pain is an effective mode of treatment.

References

Balthazard, P de Goumoens P, Rivier G, Demeulenaere P, Ballabeni P, Deriaz O. Manual therapy followed by specific active exercises versus a placebo followed by specific active exercises on the improvement of functional disability in patients with chronic non specific low back pain: A randomized controlled trial. BMC Musculoskeletal Disorders. 2012;13(162):1-11.

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Andrew Young

My name is Andrew Young and I am currently a third year Doctor of Physical Therapy Student at Elon University. I am interested in orthopedic and neurological physical therapy, and am excited about working with patients and their families. In addition to being a physical therapy student, I am also passionate about health and wellness in our communities. I believe that in order to improve our patients' quality of life, we need to focus on all aspects of their wellness. View more posts from Andrew

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9 Comments on Sorting crayons: is manual therapy an effective treatment for low back pain?

  • Donatas Zailskas

    Hello, Andrew,

    Thanks for an interesting post. However, it’s also a bit troubling. S4BE is not only a place to share interesting articles or talk about the principles of EBM, but also a place that has a responsibility to provide the readers with information of sufficient quality. You’re a PT student, so you should know the controversies that surround chiropractic therapy or manual therapy. So when you try to tackle subjects that are bordering on pseudoscience providing bad quality studies, there’s a potential for misinformation.

    This type of study doesn’t sit comfortably with me and it shouldn’t with you. Authors calculated the needed sample size for the ODI score, but failed to reach it and continued the study nevertheless with just 37 participants finishing it. The control group is not adequate and there is no blinding. I understand that proper control group for manual therapy might not even be possible, however, detuned ultrasound is also not the best way. These two procedures are fundamentily different, not only giving different expectations to the patient, but different comfort levels as well, and this is extremely important when talking about pain – the most subjective experience a human can have, that is highly influenced by mood, conditioning, expectations prior knowledge about the procedure or, sometimes, even such simple things as a warm human touch. Then there’s always reporting or confirmation bias when judging pain severity. In addition to this, patient group were heterogeneous. Take all that and you might have a study that tends to overestimate the effect of the intervention.

    There’s a reason you will see a lot of focus on systematic reviews and meta-analyses here – they provide us with the best possible evidence:

    “Spinal manipulative therapy for chronic low-back pain”
    http://onlinelibrary.wiley.com/doi/10.1002/14651858.CD000447.pub3/abstract

    “High quality evidence suggests that there is no clinically relevant difference between SMT [spinal manipulative therapy] and other interventions for reducing pain and
    improving function in patients with chronic low-back pain”.

    Cheers.

    January 7, 2014 at 7:17 pm
    Reply to Donatas
    • HollyMillward

      Thanks Donatas that’s really constructive and useful.

      January 8, 2014 at 9:43 am
      Reply to HollyMillward
  • Andrew Young

    Donatas-

    Thank you for your feedback! You raised some very interesting and important points in your comments. The first point is something which I should have made clear in my original post: this is intended as an article review. That is, this post is simply to relay information presented by a specific article and NOT attempt to speak on behalf of a large body of research on the inclusion/exclusion of a treatment type. Translation: no one should use any single article to determine the effectiveness of manual therapy! As mentioned in your comments, article reviews or meta-analyses are much more useful for determining what the broad body of evidence is really saying.

    In addition, I willingly admit that there are shortcomings of this study, and you did a great job at pointing several of these out. In my time in school and also conducting research, I have learned that it is important to both critically analyze the strengths and weaknesses of published research. When we put this ideal into practice, it means that we willingly recognize the shortfalls of research and appropriately adjust the scientific weight the material should hold, while still recognizing the contribution that said piece of evidence offers.

    When applied to this specific piece of research, it is my belief that while this study may not offer evidence of high enough quality to be central to the argument for or against manual therapy, it should still be recognized for adding a piece to the overall puzzle.

    Finally, just for fun and to add another piece to the puzzle mentioned above:

    “Efficacy of spinal manipulation and mobilization for low back pain and neck pain: a systematic review and best evidence synthesis”

    http://www.thespinejournalonline.com/article/S1529-9430(03)00177-3/abstract

    “Our data synthesis suggests that recommendations can be made with some confidence regarding the use of spinal manipulation therapy and/or spinal mobilizations as a viable option for the treatment of both low back pain and neck pain.”

    January 9, 2014 at 10:27 pm
    Reply to Andrew
    • Alex Ivey

      Excellent clarification Andrew! Your article is just one intervention option among of a variety of treatments for LBP. Also Donatas, I believe your final comments come from a Cochrane review that states: “This review of 39 trials found that spinal manipulation was more effective in reducing pain and improving the ability to perform everyday activities than sham (fake) therapy and therapies already known to be unhelpful.”

      ftp://dhcp-221-222.cns.ohiou.edu/MCL_Athens/Spinal%20Manipulation%20articles/Spinal%20manipulative%20therapy%20for%20LBP_Cochrane%20review.pdf

      Surely, there are other treatments in which patients may respond more favorably. Low back pain is a general term that can encompass a variety of different impairments. LBP with mobility deficits, LBP with radiating pain, LBP with associated lower extremity pain, LBP with movement coordination impairments, and LBP with generalized pain are the classifications of LBP according to the “Clinical Practice Guidelines Linked to the International Classification of Functioning, Disability, and Health from the Orthopaedic Section of the American Physical Therapy Association.” That being said, treatment for LBP is patient specific. Some patients may benefit most from exercise, repeated movements, or modalities. However, manual therapy, including spinal manipulative therapy, is a viable option to decrease pain and increase function in patients with LBP. Thank you Andrew, for your evidence based review.

      “The aim of the wise is not to secure pleasure, but to avoid pain.”

      – Aristotle

      January 10, 2014 at 3:05 pm
      Reply to Alex
      • Donatas Zailskas

        Thank you for your reply.

        Yes, they did say that. And if you read the authors conclusions, you will find, that “findings that spinal manipulative therapy is substantially less effective than previously suggested should temper enthusiasm for this treatment as “the” recommended therapy for patients with low-back pain. We found no evidence that spinal manipulative therapy was superior to other advocated therapies, including analgesics, exercises, physical therapy, and back schools. Neither did we find evidence that these therapies were superior to spinal manipulative therapy. Therefore, we conclude that spinal manipulative therapy is one of several options of only modest effectiveness for patients with low-back pain. Truly effective therapy for such patients remains elusive.”

        Keeping a treatment as a viable option not necessarily means that it is effective, it might only mean that there aren’t enough evidence to support or dismiss the efficacy of that intervention.

        Nevertheless, my point was not about the effectiveness of manual therapy for LBP, but about the overestimated efficacy of the reviewed study and possible implications to our readers. I found that misleading.

        January 11, 2014 at 10:38 am
        Reply to Donatas
    • Donatas Zailskas

      Excellent! Then we have a point of agreement – this study has shortcomings and may not offer evidence of high enough quality. That was my main issue with your review, because you seemed to overestimate the possible implications of this study and skip through the errors, sometimes even presenting them as advantages (like the sample size). In this case, I don’t want to seem picky or dismiss the work you’ve put in to reviewing this study, but, if you take an article that is of not the best quality, and might not actually represent the general consensus about the effectiveness of an intervention (might not even be “a piece of the puzzle” anymore), why review it at all? If it’s simply because you found this study interesting, then it would be okay as long as you also emphasized the disadvantages of the study together with the advantages. Avoidance of bias is very important.

      To continue this discussion further, could you elaborate more on this: “we willingly recognize the shortfalls of research and appropriately adjust the scientific weight the material should hold, while still recognizing the contribution that said piece of evidence offers.”

      Thank you this discussion, looking forward to more posts about such interventions. The most important thing in S4BE is to learn from each other!

      January 11, 2014 at 11:00 am
      Reply to Donatas
  • Evangeline Maah

    Manual therapy is effective to some people. I know one who has undergone regular massage and he tells me that it helps lessen his back discomfort.

    January 21, 2014 at 7:39 am
    Reply to Evangeline
  • PeteLotion

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    December 2, 2014 at 5:05 am
    Reply to PeteLotion
  • Angus Brazenall

    Manual Therapy comes in many forms so as a generality the results could be variable. If you seriously wish to learn which might be the best form of treatment for non specific back pain, can I recommend you read the content of this website twice. http://www.whysuffer.co.uk

    May 13, 2015 at 10:55 pm
    Reply to Angus

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