The FDS of the small finger is vari

The FDS of the small finger is variable and is absent in 21% of the population. It is important to note, however, that when the FDS and FDP are lacerated, it is necessary
to repair both tendons. Advantages of repairing and maintaining both tendons include maintenance of the vincular blood supply, retention of a smooth gliding
surface for the FDP, and the reduced possibility of hyperextension deformities at the PIP joint.