Shoulder range of motion deficits in baseball players with an ulnar collateral ligament tear
Adaptations in rotational range of motion (ROM) of the throwing arm are common among baseball players. Often, on the dominant side, there is an increase in shoulder external rotation and a proportional decrease in internal rotation. The total rotational range of motion deficit (TROMD) is a more sensitive measure than the glenohumeral internal rotation deficit (GIRD): a difference between sides of as little as 5 degrees is clinically relevant (for a GIRD, this is 20 degrees).
This study investigated the relationship between a TROMD and tears of the ulnar collateral ligament (UCL) of the elbow. Players with a UCL tear had significantly greater TROMDs than controls – this association was even more pronounced among the subgroup of pitchers. No significant relationship was present between injuries of the UCL and deficits in horizontal adduction and elbow extension or a GIRD. > From: Garrison et al., Am J Sports Med 40 (2012) 2597-2603. All rights reserved to The Author(s).
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