Imaging of ulnar-sided wrist pain.

Ulnar-sided wrist pain has long been a diagnostic problem, partly because of the complex anatomy and many possible causes of pain in this region. This article discusses anatomy, pathophysiology, and imaging appearance of the more common causes, including tears of the triangular fibrocartilage complex, disorders of the distal radioulnar joint, tears of the lunotriquetral ligament, disorders of the extensor carpi ulnaris tendon, disorders of the pisotriquetral joint, the impingement and impaction syndromes, and ulnar wrist masses. Along with clinical history and physical examination, imaging is important in evaluation of ulnar-sided wrist pain.

Intramuscular angiomatous tumors associated with periosteal changes and pain.

This case report discusses two cases in which patients present with the uncommon triad of extremity pain, focal periosteal reaction on imaging studies, and intramuscular hemangioma on pathologic examination. Both patients presented in this article were older than those previously reported in the literature. Neither patient reported complete resolution of pain following excision, although there was marked improvement.