For treatment of flexor tendon injuries, the flexor aspect of the hand is divided into five zones
Zone I extends from the tip of the finger to the middle of middle phalanx. Its contains only flexor digitorum profundus. [see below] Injuries in zone I would produce cut to flexor digitorum profundus only.
Zone II extends from the middle of the middle phalanx to distal palmar crease. It contains both flexor tendon superficialis and flexor tendon profundus. It has been called “No Man’s Land” or “No Man’s Zone” because repair in this zone is very difficult. [Read more...]