Each of the Following Descriptions of the Flexor Zones of the Hand

question 6

Multiple Choice

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.

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