extensor indicis action, origin, insertion, innervation

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Extensor Indicis action

extend second finger, adduct second finger, assist to extend wrist

extensor indicis origin

posterior surface of distal shaft of ulna and interosseous membrane

extensor indicis innervation

radial, C6,7,8

extensor indicis insertion

tendon of the extensor digitorum at the level of the second metacarpal


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