Anatomy
Bump at bottom of humerus, medially (when hand pronated, ie palm forward). Attached; ulnar collateral ligament of elbow (significant in stabilizing the joint against valgus – lateral flexion), pronator teres, common flexor tendon. Bigger than lateral epicondyle.
Clinical
“Funny bone”; ulnar nerve runs just behind it (and can be easily felt – cordlike), with no muscle or bone covering it; blunt trauma can cause paraesthesiae such as tingling in 5th and medial half 4th fingers. Site of golfer’s elbow.
Supercondylar fractures common in children; anterior displacement of upper part of fracture (proximal fragment) can damage brachial artery (check the radial pulse).
Vignette
Tennis elbow; lateral epicondylitis. Golfer’s elbow; medial epicondylitis.
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