Radial head subluxation

Pathophysiology

Transverse tear in annular ligament with entrapment of annular ligament between radial head and capitellum

Diagnosis

1. Age 1y-5y (peak 2y-3y) d/t swinging pt by arm
2. Sudden onset
3. Absence of edema, focal tenderness, or bruising
4. ANY swelling/bruising NOT typical so XR!

Treatment

1. Pronation alone (93% successful)
2. Extend elbow then quickly supinate & flex (84%)

if back in child will move arm again in <30 min