期刊
DISABILITY AND REHABILITATION
卷 37, 期 12, 页码 1033-1043出版社
TAYLOR & FRANCIS LTD
DOI: 10.3109/09638288.2014.949357
关键词
Characteristics; rotator cuff; shoulder; stabilizer muscle
Purpose: To systematically review the evidence in support of the purported function of the rotator cuff muscles as dynamic stabilizers of the glenohumeral joint. Methods: Electronic searches were conducted using AMED, CINAHL, Medline and SPORT Discus. Studies were required to include at least one characteristic of a stabilizer muscle. Quality analysis was completed by two assessors independently. Data were extracted for four main characteristics of stabilizer muscles: (1) moment arm length, (2) onset of muscle activity, (3) joint stiffness as measured by contribution of muscle activity to prevent joint translation, (4) co-contraction as demonstrated by electromyography muscle activity and co-activation ratio. Results: Twenty of the 1726 identified studies were selected for the review. Rotator cuff muscles can limit joint translation (five studies) and contribute to joint stiffness (one study), possess shorter moment arms in some movements (three studies), but show limited evidence for stabilizing characteristics of early onset (seven studies) and co-contraction (seven studies). Conclusion: The rotator cuff muscles exhibited some stabilization characteristics but not all. On the basis of our current low to moderate quality evidence, the most likely, but as yet unverified, stabilization role for the rotator cuff muscles appears to be limiting of translation in a direction-specific manner.
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