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J Electromyogr Kinesiol ; 62: 102331, 2022 Feb.
Article in English | MEDLINE | ID: mdl-31324512

ABSTRACT

This study investigated shoulder complex joint kinematics and functional outcomes before and after full-thickness supraspinatus rotator cuff repair. Nine adults (mean age 63.4 ±â€¯6.2 years) participated in three test sessions: 0-12 weeks pre-operatively, 9-12 weeks, and 22-30 weeks post-operatively. Upper extremity kinematics of the surgical arm's glenohumeral, acromioclavicular, sternoclavicular and thoracohumeral joints over the duration of a hair combing task were quantified with motion analysis using inverse kinematics. The UCLA Shoulder Rating and Simple Shoulder Test shoulder health outcomes were administered at each session to determine patients' perceived function of their surgical shoulder. Results indicated multiple significant increases over time among the three joints comprising the shoulder complex in the coronal and transverse planes, despite no increases in thoracohumeral motion, and suggest that thoracohumeral motion alone does not provide a comprehensive assessment. Interestingly, more significant increases were observed at the 6-month evaluation than the 3-month evaluation, which is not aligned with the standard rehabilitation endpoint. Thus, our findings suggest that clinicians should evaluate all joints of the shoulder complex during longer-term rehabilitation assessment. Ultimately, knowledge of patients' pre-operative and post-operative shoulder complex kinematics may help to improve rehabilitation to promote improved patient outcomes.


Subject(s)
Rotator Cuff Injuries , Shoulder Joint , Adult , Aged , Biomechanical Phenomena , Humans , Middle Aged , Muscle, Skeletal , Range of Motion, Articular , Rotator Cuff/surgery , Rotator Cuff Injuries/surgery , Shoulder , Shoulder Joint/surgery
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