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