Extensor digitorum muscle

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The extensor digitorum muscle is a muscle of the forearm used to extend all the joints of the fingers.

Contents

Origin

The extensor digitorum muscle originates from the humerus near the elbow joint. It attaches at the common extensor origin on the anterior aspect of the lateral epicondyle.

Insertion

The extensor digitorum muscle inserts on the fingers after the tendon divides into four smaller tendons, one for each finger.

Innervation

The extensor digitorum muscle is innervated by the posterior interosseous nerve (C7 and C8).

See also

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