Fluoroscopic spots during arthrogram. A, Needle in place, start of contrast injection. B, End of contrast injection, at point of slight patient discomfort; contrast material is confined to radiocarpal joint. C, With ulnar deviation, contrast material passes into midcarpal joint between lunate and triquetrum (arrowheads), indicating lunotriquetral ligament tear. D, On follow-up overhead view, contrast material fills midcarpal joints, including scapholunate joint from its distal aspect, making it difficult to see whether scapholunate or lunotriquetral ligament is torn. Small defect (arrowheads) between contrast material in scapholunate space and radiocarpal space indicates intact scapholunate ligament.