Second Palmar Interosseous


Origin: the radial surface of the Ring Metacarpal

Insertion: the radial base of the ring finger proximal phalanx and the ring radial digital extensor mechanism

Function: flexes, radial deviates (adducts) and pronates the ring finger MCP joint, and extends the ring PIP and DIP joints

Nerve: Motor Branch of Ulnar Nerve

Artery: Deep Palmar Arch

Interossei - all

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