[feature] medial epicondyle [bone] humerus [description] a knob-like projection on the medial side of the humerus proximal to the trochlea [notes] 
it is the attachment site of the common flexor tendon which is the origin for the superficial group of forearm flexor muscles (pronator teres m.; flexor carpi radialis m.; palmaris longus m.; flexor carpi ulnaris m. and flexor digitorum superficialis m.); inflammation of the attachment of the common flexor tendon is called medial epicondylitis which is also known as "tennis elbow"; the ulnar nerve is in contact with bone as it courses posterior to the medial epicondyle where it is susceptible to injury from blunt trauma or fracture