A, “Terrible triad” elbow injury. There is characteristic stripping of lateral collateral ligament complex from distal humerus. Portion of common extensor origin/lateral ligament complex is hanging down from bare lateral condyle. Coronoid fragment is trapped in joint (arrowhead). Defect in radial head can be seen behind coronoid fragment. B and C, Radiographic images of “terrible triad” injury. D, After radial head resection, instability was still present. E, After coronoid suture repair, minor subluxation was still present. F, Stability was obtained with repair of coronoid and lateral collateral ligament.