Presentation
Patient had a shoulder dislocation and managed to reduce it on his own.
Patient Data
Cortical depression at the posterior aspect of the humeral head may represent a Hill-Sachs lesion. Left humeral head is enlocated with satisfactory glenohumeral alignment.
Case Discussion
A Hill-Sachs defect is commonly seen in patients with anterior shoulder dislocations, due to the impact from the humeral head against the anterior glenoid rim1.
As the defect is on the posterior aspect of the humeral head, it may not always be present on an anterio-posterior radiograph of the shoulder, especially if it was performed with an external rotation of the humerus. Therefore, a Stryker notch radiograph would be helpful in assessing the severity of the Hill-Sachs defect2. Other views that would demonstrate the Hill-Sachs defect would be an anterio-posterior radiograph with an internal rotation of the humerus3.
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