The dorsal wrinkle ligaments of the proximal interphalangeal joint.

This investigation is concerned with a precise description of the anatomy of cutaneous ligaments over the dorsum of the proximal interphalangeal joint which define the "wrinkle pattern" and their relationship to other fascial structures in the digits. The significance of alterations of the wrinkle pattern in pathological conditions (e.g. knuckle pads) will be discussed.