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Common extensor tendon

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Posterior surface of the forearm. Superficial muscles. (Common extensor tendon not labeled, but region is visible at upper right.)

The common extensor tendon is a tendon shared by a number of extensor muscles in the forearm. It attaches to the lateral epicondyle of the humerus.

It serves as the origin (in part) for a number of muscles (largely in the posterior compartment of the forearm:

See also

Common flexor tendon

Muscles of the arm

deltoid rotator cuff supraspinatus infraspinatus teres minor subscapularis teres major
fascia:	deltoid fascia supraspinous fascia infraspinous fascia

Arm
(compartments)

anterior	coracobrachialis biceps brachialis
posterior	triceps brachii anconeus articularis cubiti
fascia	axillary sheath axillary fascia brachial fascia intermuscular septa lateral medial
other	spaces quadrangular space triangular space triangular interval

Forearm
(compartments)

superficial:	pronator teres palmaris longus flexor carpi radialis flexor carpi ulnaris flexor digitorum superficialis
deep:	pronator quadratus flexor digitorum profundus flexor pollicis longus

superficial:	mobile wad brachioradialis extensor carpi radialis longus and brevis extensor digitorum extensor digiti minimi extensor carpi ulnaris
deep:	supinator anatomical snuffbox abductor pollicis longus extensor pollicis brevis extensor pollicis longus extensor indicis

other

lateral volar

medial volar

intermediate

lumbrical
interossei
- dorsal
- palmar

posterior:	extensor retinaculum extensor expansion
anterior:	flexor retinaculum palmar aponeurosis

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