The McKenzie exercise program is a classification-based treatment for lower back pain. The exercise involves identifying certain sub-groups of patients with lower back pain and prescribing exercises based upon those findings.
Many people think McKenzie exercise is just extension exercise but its not. This is where much of the debate as to whether it works or not hsas come from.
Many researchers have compared lower back extension exercises to different treatments with mixed results – some favour it, other don't. The argument from those who support this type of treatment is that plain extension exercise is not a McKenzie exercise program and that in order to see if it works only patients that have been sub - classified and had proper McKenzie treatment should be included in the studies.
Well, in 2006 this was done
(Machado, de Souza, P. H. Ferreira & M. L. Ferreira 2006). A group of researcher's reviewed all the research that had looked at using McKenzie exercises properly and came up with the following conclusions:
They concluded that although it might be a bit better than passive treatment the size of the difference was clinically meaningless ie not a big enough difference to get excited about. They decided it was unproven if it was effective or not.
Personally I don’t think just doing one thing is the answer. Lower back pain is caused by a combination of things including poor posture, lack of movement and/or muscular support (poor core stability) around the lower back and also poor physical fitness. Anxiety and worry about back pain makes it much worse. In order to properly manage lower back pain you have to think about all of these things.
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Prodigy 2005. Back pain - lower: Simple low back pain - follow-up and reassessment. Available at: http://www.cks.library.nhs.uk/back_pain_lower
Machado, L.A.C. et al., 2006. The McKenzie method for low back pain:
a systematic review of the literature with a meta-analysis approach. Spine, 31(9), p.E254-62.