Strachan, Donovan (2004) The effect of high velocity low amplitude manipulation on the amelioration of cervical spine rotation asymmetries: is the cavitation important? Coursework Master thesis, Victoria University.

Abstract

Background: High velocity low amplitude (HVLA) thrust techniques are commonly used by manual therapists. One of the primary goals of these techniques is to increase the range of motion within spinal segments. Still, there is much contention about the outcomes of the audible release or cavitation associated with these techniques. This study is to investigate the effect that HVLA thrust techniques has on total cervical ROM asymmetries with and without cavitation. Conclusion: HVLA thrust technique to the AA joint with cavitation produced a significant amelioration in total cervical rotation asymmetry immediately post-manipulation. A significant amelioration in toal cervical rotation asymmetries was not found when HVLA failed to produce a cavitation. The reduction in the asymmetry immediately post-manipulation had reduced or returned to the pre-manipulation level at 30 minutes post-manipulation. This minor thesis was written by a post-graduate student as part of the requirements of the Master of Health Science (Osteopathy) program.

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