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

question 5

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 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 (FDS and FDP)tendons 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 MCP flexion.
• D) Zone IV includes the carpal tunnel;extrinsic flexor tendons (FDS,FDP,and FPL)can adhere in the tunnel following inflammation.

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