A patient whose ulnar nerve and triceps did not dislocate over the medial epicondyle preoperatively had snapping of a portion of the medial triceps after submuscular transposition of the ulnar nerve.
Type 1 Medial head of the triceps remains posterior to the medial epicondyle with passive elbow flexion. Type 2 Triceps subluxates onto but not anterior to the medial epicondyle with elbow flexion.
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