Abstract
The glenoid labrum is an important soft tissue structure that provides stability to the shoulder joint. When the labrum is injured, affected patients may present with chronic shoulder instability and future recurrent dislocation. The Bankart lesion is the most common labral injury, and is often accompanied by a Hill-Sachs lesion of the humerus. Various imaging techniques are available for detection of the Bankart lesion and its variants, such as anterior labroligamentous periosteal sleeve avulsion and Perthes lesion. Direct magnetic resonance (MR) arthrography is currently the imaging modality of choice for evaluation of the various types of labral tears. As normal anatomical variants of glenoid labrum are not uncommonly encountered, familiarity with appearances of this potential pitfall helps avoid misdiagnosis.
Highlights
The shoulder joint is one of the more commonly injured joints in the body, with its inherently large range of mobility predisposing it to risk of dislocation and development of chronic instability
Imaging has an important role in the evaluation of shoulder injuries and associated internal derangements, with magnetic resonance (MR) imaging being the modality of choice
The glenohumeral joint is a ball and socket joint which formed by the glenoid fossa of the scapula together with the humeral head
Summary
The shoulder joint is one of the more commonly injured joints in the body, with its inherently large range of mobility predisposing it to risk of dislocation and development of chronic instability. Anterior glenohumeral dislocation is the most common form of acute traumatic instability, accounting for more than 95% of glenohumeral joint dislocations. Imaging has an important role in the evaluation of shoulder injuries and associated internal derangements, with magnetic resonance (MR) imaging being the modality of choice
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