part of part of Homo sapiens bone fossa scapula supraspinous fossa of scapula 2026-03-19T00:00:00Z A triangular bone fossa on the posterior surface of the scapula superior to the scapular spine, providing origin for the supraspinatus muscle, whose tendon passes beneath the coracoacromial arch to insert on the greater tubercle of the humerus. David Osumi-Sutherland