European Journal of Trauma
Ab stractInferior shoulder dislocation is a rare form of shoulder dislocation. A subglenoid subtype of an inferior glenohumeral dislocation is described which clinically mimicked anterior dislocation, as the pathognomonic upright arm posture was conspicuous by its absence. An awareness of associated potential axillary artery injury, brachial plexus complications and rotator cuff tears is important in this rare entity and should be excluded with a high index of suspicion.
IntroductionInferior dislocation is a rare term used for all shoulder dislocations with the arm characteristically locked in an upright position as a result of hyperabduction injury. It accounts for 0.5% of all shoulder dislocations [1,2].We present a case of posttraumatic inferior dislocation of the shoulder joint with the head of the humerus locked in the subglenoid region and the arm lying by the side of the body in neutral position and not in the typical hyperabducted attitude. Although subglenoid inferior shoulder dislocation with the arm in erect position is well described in the literature, we found only one similar case previously reported of subglenoid dislocation with the arm in alike position to anterior dislocation.
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