M. Extensor Indicis (EI)

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Insertion

Distal extensor expansion of 2nd finger

Trajectory

Down + outwards Tendon --> 4th compartment extensors --> indicis (medially extensor finger tendon)

Fonction

Indicis + hand: extension

Innervation

N. Radial

Origin

Post. surface ulna + interosseous mm. (below Extensor pollicis longus)

Classification

Posterior - Deep Extensors


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