This condition is a compression injury to the ulnar nerve near the elbow. This is the nerve that produces a jolt when you bump your “funny bone.”

This condition, commonly called tennis elbow, is an inflammation of the tendons that connect the muscles of the forearm to the elbow. The pain is primarily felt at the lateral epicondyle, the bony bump on the outer side of the elbow.

This condition is an injury to the medial ulnar collateral ligament, a ligament composed of three bands located on the inner side of the elbow. The MUCL connects the humerus to the ulna. Injury to the MUCL can cause pain, weakness and sometimes a feeling of instability in the arm.