Snapping of the proximal interphalangeal joint due to the lateral band.

An unusual case is reported of snapping of the proximal interphalangeal joint (PIPJ) of the right little finger in a 14-year-old girl. The lateral band of the radial side slipped over the peak of the condyle of the proximal phalanx at 40 deg of flexion. The lateral band was cut and sutured to the central slip. At follow-up examination 4 months later, there had been no recurrence.