Locked posterior dislocations of the shoulder offer a unique challenge to the treating physician. They are uncommon ( 5% of all shoulder dislocations).1 When they do occur, treatment is often compromised by a delay in presentation and diagnosis. In a single series, 79% of cases were missed on initial evaluation. Furthermore, in the series reported by McLaughlin, mean time between injury and diagnosis was 8 months.
Traditionally, treatment of a patient with chronic, locked posterior shoulder dislocation has included formal open reduction, with transfer of the lesser tuberosity into the anterior humeral head defect if necessary to provide stability. To our knowledge, arthroscopic management of this problem has not been reported. We report the case of a patient with a chronic, locked posterior shoulder dislocation that was treated with an arthroscopically assisted reduction followed by posterior arthroscopic stabilization.