Each of the following descriptions of the flexor zones of the hand and forearm is correct except:
A) Zone I is where the flexor digitorum superficialis (FDS) tendon inserts; if the tendon avulses, the patient will be unable to flex the DIP joint.
B) Zone II, known as "no-man's land," is where the extrinsic flexor tendons (flexor digitorum superficialis and profundus) lie in close proximity; range-limiting adhesions that prevent tendon gliding are likely to develop in this area after injury and repair.
C) Zone III is in the palm of the hand; injury in this area can damage the lumbricales and interfere with MP flexion.
D) Zone IV includes the carpal tunnel; the extrinsic flexor tendons can adhere in the tunnel following inflammation.
Correct Answer:
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