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