VARIATIONS OF THE FLEXOR DIGITORUM SUPERFICIALIS TENDON OF THE LITTLEFINGER

Seventy cadaveric hands were dissected to study variations of the flex or digitorum superficialis tendon (FDS) to the little finger. Anatomic al variations were present in 13% of hands and 10% of the hands showed an anatomical variation that would preclude independent FDS function in the little finger. The distance of the decussation from the metacar pophalangeal joint was measured. A ratio of this distance to proximal phalangeal length was calculated. The ratio indicated that decussation position was independent of phalangeal size.