Final answer:
The nerve most likely to be injured in fractures of the medial epicondyle is the ulnar nerve.
Step-by-step explanation:
The nerve most likely to be injured in fractures of the medial epicondyle is the ulnar nerve.
The medial epicondyle is a bony projection on the medial side of the distal humerus, and it serves as an attachment point for various muscles of the forearm. Fractures of the medial epicondyle can cause damage to the ulnar nerve, which runs close to this area.
When the medial epicondyle is fractured, the bone fragments or displaced bones can compress or impinge on the ulnar nerve, leading to symptoms such as pain, numbness, and tingling along the ulnar aspect of the forearm and hand.