07/03/2024
Patients with acute lumbar sciatica secondary to disc herniation who received 2 weeks of lumbar traction, either at 10% BW or 50% BW, reported reduced radicular pain and functional impairment and improved well-being regardless of the traction force group to which they were assigned. The effects of the traction treatment were independent of the initial level of medication and appeared to be maintained at the 2-week follow-up. (Marie-Eve Isner-Horobeti et al 2016 J Manipulative Physiol Ther 39, 45-654)
Dosage of 30-50% body weight does not take into account the patients morphology (floppy vs st**fy), nor the state of their pathology. It has been hypothesised that, the high dose biomechanical construct (30-50% body weight), based on cadavers and anecdotal history (James Cyriax 1950's) of inter-vertebral separation, is much too high, if a neurophysiological approach is to be considered. By incrementally adding load, from 10->25kg, it can be noted, when a normalisation of signs and symptoms occurs. Moreover, at a certain point of loading, the signs and symptoms begin to deteriorate once again. It is considered, that this latter methodology, more appropriately takes into account, neurophysiological phenomenon such a neurogenic inflammation, deterministic chaos immunological responses, descending sympathetic as well as peripheral sympathetic nervous system responses as well as the need to clinically respect muscle spasm. Clinically, this has been a tried and tested method, where presumably a certain dose of traction takes pressure off the blood vessels and nerves inside the IVF and potentially stretches the capsule of the Z-joint, whereas a dose which is too large, stretches pain sensitive structures which re-invokes muscle spasms and re-introduces compression. Reflexogenic muscle spasms must be respected.
Importantly, lumbar traction is also thoracic traction, as tension as far as the upper thoracic rings can dissipate with the application of low dose 'lumbar traction'
Dose Force = the normalisation of S+S : Position = antalgic position, supine with legs in 90º flexion, supine with legs in slight flexion : Frequency = 1-2 times per week. Intermittent vs Constant = whatever feels best for the patient, however the clinician should be aware that I/T loading causes pre-conditioning and potentially greater creep and hysteresis.
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