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Second Dorsal Interosseous Tendons: Origin: Adjacent surfaces of the index and middle metacarpals Insertion: the radial base of the middle finger proximal phalanx and the middle finger radial digital extensor mechanism Function: flexes, radially deviates (abducts), and pronates the middle finger MCP joint, and extends the middle 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. |