Supracondylar Process

In approximately 1% of upper extremities, there is a downward-curved, hook-shaped process of bone that emanates

from the medial cortex approximately 5 cm proximal to the

medial epicondyle. It can be associated with a connecting

fibrous band (ligament of Struthers), which can be a proximal extension of the pronator teres. The median nerve may

pass deep to the supracondylar process and ligament, and

may be subject to compression, resulting in median neuropathy. The brachial artery also may pass deep to the ligament (28,40–43).

Lateral Epicondylitis

Lateral epicondylitis commonly is referred to as tennis

elbow. It is thought to consist of either chronic inflammation, partial tear, or “overuse injury” of the common extensor origin. Chronic or repetitive wrist or digital extension

often is associated with the onset of symptoms. The extensor carpi radialis brevis often is implicated as the main muscle involved. Although management usually is conservative

(activity modification, antiinflammatory medications,

splinting, cortisone injections), severe and refractory cases

can be managed with operative exploration and release,

debridement, or repair of the extensor carpi radialis brevis

origin or other involved muscle.

Medial Epicondylitis

Medial epicondylitis commonly is referred to as golfer’s

elbow. Similar to lateral epicondylitis, it is though to consist

of either chronic inflammation, partial tear, or overuse

injury of the common flexor pronator muscle origin.

26 Systems Anatomy

Chronic or repetitive wrist or digital flexion often is associated with symptoms.

Osteochondrosis

Osteochondrosis (osteochondritis dissecans, osteonecrosis)

of the capitellum of the humerus is referred to as Panner’s

disease.