Medial epicondylar fractures

What is this?
The medial epicondyle is the point of bone on the inner (medial) elbow. Attached to it are the very strong flexor/pronator muscles. During throwing, those muscles contract with great force. This can be so much force that the muscles essentially "pull off" the medial epicondyle from the rest of the bone. It happens suddenly, during one throw, often without any warning. It is usually but not always seen in 10-11 year-olds with exceptional pitching velocity. (fastball > 65mph)

What does it feel like?
This is an obvious, sudden injury to the inner elbow that happens during the acceleration phase of throwing. No thrower will be able to continue play once this occurs.

How is it treated?
Nonoperative treatment is not indicated if a player wishes to ever return to throwing.

Operative treatment is screw fixation of the epicondyle.

How long will I be out of throwing?
About 12 months.