The efficacy of muscle energy technique in the treatment of rotator cuff tendonitis in terms of subjective and objective clinical findings

Abstract

Purpose Repetitive strain injuries, especially rotator cuff tendonitis, are increasing and reaching epidemic proportions in certain industries and in most industrialized countries (Yassi et al. 1996). Fatigue of the rotator cuff allows the humeral head to translate anteriorly, with resultant mechanical impingement of the supraspinatus tendon. At this point inflammatory changes become evident (Fu et al. 1995). According to Greenman (1996), muscle energy technique (MET) is a 'manual medicine treatment procedure that involves the voluntary contraction of a patients muscle in a precisely controlled direction, at varying levels of intensity, against a distinctively executed counterforce applied by the operator.' It has been hypothesized that MET can be used to lengthen and strengthen muscles, to increase fluid mechanics and decrease local edema, and to mobilize a restricted articulation (Greenman 1996). However, these statements have been made in the absence or appropriate research in order to support such statements, therefore. the aim of this study was to assess the efficacy of Muscle Energy Technique in the treatment of rotator cuff tendonitis in terms of subjective and objective clinical findings. Methods Objective measures included: Diagnostic ultrasound which was used to evaluate changes in inflammation and thickness of the involved tendon, the algometer was used to assess point tenderness, whilst inclinometer readings were taken to evaluate the associated changes in range of motion that may have taken placei