This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries Around Shoulder, Subject name: Orthopaedics
Hill Sachs lesion is seen in - 
Select and explain. 
A. Humeral head, B. Femoral head, C. Tibial shaft, D. Skull base
A: Humeral head
Answer: A: Humeral head 
Explanation: Ans. is 'a' i.e., Humeral head * Hill-sach lesion is a compression fracture of the posterolateral articular surface of humeral head. With the trauma of repeated dislocation, the humeral head is forced upon glenoid rim and the relatively soft bone of humoral head is crushed. The end result is an impression of the glenoid rim that is made on the humeral head.