Influence of posterior capsular tightness on throwing shoulder injury
This study sought to determine if posterior capsular tightness (i.e. the presence of a GIRD) in the shoulder was associated with higher rates of throwing injuries. 61 patients that underwent arthroscopic shoulder surgery for a throwing injury that had lasted at least 3 months despite conservative therapy were evaluated for posterior capsular tightness.
A tight posterior capsule was associated with tears of the anterior part of the supraspinatus tendon and a more anteriorly located SLAP lesion. The prevalence of lesions of the tendon of the long head of the biceps, the superior glenohumeral ligament and the subscapularis muscle was higher in the group without posterior capsular tightness – it is speculated that these shoulders were “loose”, and for that reason prone to injuries.
Important limitations of this study are the retrospective design and the small number of non-tight shoulders (only 11) limiting the strength of conclusions and weakening statistical power, respectively. > From: Nakagawa et al., Knee Surg Sports Traumatol Arthrosc 21 (2013) 1598-1602. All rights reserved to Springer-Verlag.
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