This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Elbow injuries, Subject name: Orthopaedics
Nerve injured in fracture of medial epicondyle of humerus 
Select and explain. 
A. Anterior interosseous nerve, B. Median nerve, C. Ulnar nerve, D. Radial nerve
C: Ulnar nerve
Answer: C: Ulnar nerve 
Explanation: It is more commonly injured than the lateral epicondyle, because the epiphysis of the medial epicondyle appears early and fuses late with the main epiphysis of the lower humerus. This fracture is commonly associated with posterior dislocation of the elbow. It may be associated with an ulnar nerve injury. Ref essential ohopaedic, maheshwari and mhaskar 9th ed p 105