author(s)
Kamal Sarma, Jasvinder Singh Sasan and Shalini Suri

abstract
The present study was conducted on the humerus of an adult Indian Barking deer. It was a long bone with spirally twisted shaft and two prominent extremities. The proximal third of the medial surface had a short teres tubercle. The proximal third of the lateral surface possessed at its middle a sharp deltoid tuberosity. The nutrient foramen was located on the distal third of the shaft on the postero-lateral aspect. The head was elliptical in outline with a very distinct neck. The cranial part or summit of lateral tuberosity was well developed and blunt whereas the caudal part was ill-developed. The medial surface of the summit of lateral tuberosity facing the bicipital groove had 2 spine-like structures, the distal of which was better developed than the proximal one. The area for the insertion of infra-spinatus muscle was roughly triangular in outline. The medial tuberosity was much smaller as compared to the lateral one. A distinct groove was observed caudal to the posterior division of the medial tuberosity. The bicipital or inter-tubercular groove was well developed and roughly U-shaped. The anterior parts of both the lateral and medial tuberosities curved over the bicipital groove. The distal extremity consisted of two condyles, two epicondyles and two fossae. The medial condyle and epicondyle were much larger than the lateral counterpart but the lateral epicondylar crest was more prominent than the medial one. The radial fossa was deep but the olecranon fossa was much deeper. Both the fossae were separated by a thin plate of bone. The width of the bone decreased from proximal to the middle of the shaft and then increased towards distal end.