Wrist Extensor Tendons Anatomy

The first osseofibrous tunnel is located on the radial side of the wrist ait contains two tendons the abductor pollicis longus abd l and the extensor pollicis brevis est b both of which originate deep in the ulnar side of the forearm from the dorsal aspects middle third of the ulna radius and interosseous membrane b. 9 extensor carpi radialis longus t.

Extensor Tendon Lacerations Background History Of The Procedure

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Extensor pollicis longus tendon.

Wrist extensor tendons anatomy. 11 extensor pollicis brevis t abductor pollicis longus t. The extensor pollicis longus straightens the most distal farthest from your body joint of the thumb. In this article we shall look at the anatomy of the extensor compartments of the wrist their.

The extensor tendons are held in place by the extensor retinaculum. Extensor tendon compartments of the wrist are anatomical tunnels on the back of the wrist that contain tendons of muscles that extend as opposed to flex the wrist and the digits fingers and thumb. The extensor tendon compartments of the wrist are six tunnels which transmit the long extensor tendons from the forearm into the hand.

First dorsal wrist compartment. The apl originates from the middle third of the dorsal radius the interosseous membrane and the dorsolateral ulna lying just deep to the supinator muscle. 12 flexor pollicis longus tendon.

Atlas of wrist mri anatomy. They are located on the posterior aspect of the wrist. Each tunnel is lined internally by a synovial sheath and separated from one another by fibrous septa.

Its muscle belly is in the forearm and the tendon travels along the wrist and enters the third compartment of the band that holds the tendons in position at the wrist. The first dorsal compartment of the wrist comprises the abductor pollicis longus apl and extensor pollicis brevis epb tendons. 8 extensor carpi radialis brevis t.

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