227 .205 Lecture Notes - Midcarpal Joint, Shoulder Joint, Carpometacarpal Joint
Document Summary
1)breed differences: inherited weakness of girdle muscles in jerseys. Stands with slightly abducted shoulder called wing shoulder since the shoulder and humerus are away from the rib cage. Horses have no acromion while ox has prominent acromion. 3)rudimentary subclavius narrow neck to wide shoulder joints so the transition from neck to shoulder is abrupt. Horse subclavius origin: cranial part of sternum insert : cranial part of supraspinatus m so the transition from neck to the shoulder joint is smooth. 2)ox ulna is complete and fused with the radius. Compared to horse: ulna is only proximal part of shaft, while the distal end if only the radius: knock kneed stance : no functional interference, just a conformation. Stand with the carpal inward angulation and the feed are angled laterally: above the elbow joint. same as horse. 5)in ox, the extensor and the flexor bifurcates to supply both digits, compared to horse only one digit so does not bifurcate.
