Relationship between shoulder motion pattern and symptom in patient with rotator cuff tear

2011 Fiscal Year Final Research Report

• Project/Area Number: 22700528
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Rehabilitation science/Welfare engineering
• Research Institution: Tohoku University
• Principal Investigator: MURAKI Takayuki 東北大学, 大学院・医学系研究科, 非常勤講師 (50404778)
• Project Period (FY): 2010 – 2011
• Keywords: 腱板 / 無症候性断裂 / 動作解析 / 肩甲骨

Research Abstract

The purpose of this study was to determine the kinematic difference of shoulder motion between asymptomatic and symptomatic subjects with rotator cuff tear. Twenty subjects with rotator cuff tear were divided into asymptomatic and symptomatic groups (10 subjects for each), and then shoulder elevation was measured with a 3-dimensional motion analysis device. Scapular external rotation in the symptomatic group was significantly smaller than that in the asymptomatic group at 60, 90, and 120 degrees of shoulder elevation. Function of external rotator muscles of the scapula may contribute to symptom occurrence in subjects with rotator cuff tear.