Third Palmar Interosseous


Origin: radial border of the small metacarpal

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

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

Nerve: Motor Branch of Ulnar Nerve

Artery: deep palmar arch

Interossei - all

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