Low-Energy Scapular Dislocation: A Rare Complication After Glenohumeral Arthrodesis: A Case Report

This case report describes a rare low-energy extrathoracic scapular dislocation, from axial loading of the upper extremity, in the setting of previous glenohumeral arthrodesis. By 4 months after closed reduction, the patient's scapulothoracic joint felt stable and his neurologic symptoms had returned to baseline. Over a seventeen-month follow-up period, he did not sustain a recurrent dislocation.

Glenohumeral arthrodesis may increase the risk of extrathoracic scapular dislocation. Orthopedic surgeons should recognize that extrathoracic scapular dislocations can be reduced by direct manipulation of the scapula under sedation and that outcomes after successful closed reduction are likely good.