Hypothetically, you sustain an injury to the tendons of all anterior antebrachia

Question

Hypothetically, you sustain an injury to the tendons of all anterior antebrachial muscles that cross the radiocarpal joint; however, the nerves and blood supply to the upper limb are undamaged. Would you still be able to open the door in a similar way as depicted (phase 1 and 2)? If so, which muscles would be used, and which actions would they generate at the joints of the wrist and the five digits? Are there any actions depicted in this movement that would be lost or weakened? If so, what are they, what joints would they affect, and what muscles were injured leading to the decrement?

Phase 1: Hand gripping around the door handle

Phase 2: Rotation of the door knob

Explanation / Answer

Phase 1: Hand gripping around the door handle- this action is lost or weakened.

the joints affected are the wrist, metacarpophalangeal and interphalangeal joints.

muscles affected are-  

Phase 2: Rotation of the door knob - this movenment of supination is compensated by the brachial muscles-

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