Arthroscopic Management of Osteochondrosis of the Glenoid Cavity in a Dog.

A 5 mo old English setter dog was presented with mild left forelimb lameness. Physical examination revealed pain upon shoulder palpation and extension. Mediolateral radiographs of both shoulders showed a subchondral bone defect in the mid-portion of the glenoid cavity. Computed tomography arthrography and arthroscopy revealed a cartilage flap, suggesting osteochondritis dissecans of the glenoid cavity. Subchondral bone cysts of the glenoid cavity and incomplete fusion of the supraglenoid tubercle were also observed. Arthroscopic removal of the fragment led to a favorable outcome.