Anterior shoulder dislocation

Case contributed by Andrew Murphy
Diagnosis certain


Mechanical fall, clinically anterior shoulder dislocation.

Patient Data

Age: 60 years
Gender: Male

The humeral head is dislocated in the anterior inferior direction, there is evidence of a previous rotator cuff repair with surgical anchors noted within the humeral head.

There are signs of degenerative changes, however a small bony fragment just lateral to the glenoid could represent an acute Bankart lesion.

The humeral head has an irregular posterosuperior outline, this could be an associated Hill-Sachs deformity.


Case Discussion

The at-risk age groups of anterior dislocations follow a bimodal model, with both young adult men and older patients of either gender at a statistically higher risk. Anterior shoulder dislocations occur during external rotation of the abducted arm, forcing the humeral head out of the socket anteriorly, inferiorly, and medially 1.

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