Reposition the tendon
If the tendon has retracted to the PIP joint, the zigzag incision has to be
extended to the PIP joint.
Use a small flexible catheter or similar tool to retract the tendon.
Use a 4 (o) suture to hold the end of the FDP in the Mansson fashion and pass
these through a suture loop. The tendon will be repositioned by exerting pull
with the suture.