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MSK-01·Tutor mode·medium
A 22-year-old college baseball pitcher is evaluated after sustaining
an anterior glenohumeral dislocation during the late-cocking phase
of his throw. The arm was positioned at 90 degrees of abduction
with maximal external rotation at the moment of injury. Following
closed reduction in the emergency department, the orthopedic
consultant asks the resident to identify which capsular structure
serves as the dominant restraint to anterior humeral head translation
specifically at and above 90 degrees of abduction.
Which glenohumeral ligament is the primary restraint to anterior translation at and above 90 degrees of abduction?
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