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Fourth Dorsal Interosseous Tendons: Origin: the adjacent surfaces of the ring and small metacarpals Insertion: ulnar base of the ring finger proximal phalanx and the ring finger ulnar digital extensor mechanism Function: flexes, ulnar deviates (abducts) and supinates the ring finger MCP joint and extends the ring finger PIP and DIP joints Nerve: Motor Branch of Ulnar Nerve Artery: deep palmar arch
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American Society for Surgery of the Hand assh.org The Best Resource For Your Hands, Period. |