The lateral surface of the scapula is divided by the spine of the scapula into a smaller cranial supraspinous fossa (for origin of the supraspinous muscle) and a larger caudal infraspinous fossa (for origin of infraspinous muscle).
The spine of the scapula extends form the dorsal border to the ventral angle, increasing in height dorsoventrally. The spine of the scapula ends with the acromion, a well-defined eminence, located close to the ventral angle in carnivores and ruminants but remaining distal in pigs and horses. The acromion extends ventrally in carnivores (hamate process) and extends caudally in felidae (suprahamate process). The rabbits possess the both processes of acromion (hamate and suprahamate).