An accessory centre of ossification was identified on the caudal aspect of the glenoid
(ACGOC) in nine dogs. In three of the dogs, concomitant lesions were found in the
same shoulder joint. When they appeared to be loose, the fragments were removed using
arthroscopy in eight dogs. Upon histological examination in four dogs, the presence
of articular cartilage on these ACGOC confirmed the fact that they represented a portion
of the glenoid. The resolution of the clinical signs in six cases with isolated ACGOC
after fragment excision and without concomitant lesions suggests that ACGOC was the
cause of lameness in these affected dogs.
Keywords
Scapula - dog - shoulder joint - glenoid - accessory ossification centre - incomplete
ossification - arthroscopy