Group IX. Function: The forearm muscles act in strong grasping movements and are supplemented by the intrinsic muscles in delicate manipulative movements. Intrinsic muscles of hand: Thenar eminence; short flexor, opponens, abductor and adductor of thumb;

Note: The hand is so compact a structure that isolated muscle injuries are rare, being nearly always complicated with injuries of bones, joints, tendons, etc. Rate on  limitation of motion, minimum 10 percent.

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