Gamekeeper's thumb. Evaluation by arthrography and stress roentgenography.

We reviewed 197 previously reported cases of acute rupture of the ulnar collateral ligament of the metacarpophalangeal joint with respect to anatomy, diagnosis, surgical findings, and management. A standardized roentgenographic technique in stress abduction of the thumb was developed from thirty normal patients. The correlation between the abduction arc as recorded by our technique, the arthogram, and surgical pathology in twenty patients is reported.