Extensor Tendons Of Hand Anatomy

Extensor denotes their action which is to extend or open flat joints in the hand. The extensor pollicis brevis tendon along with the apl also takes the thumb away from the hand.

Anatomy 101 The Extensor Tendon The Handcare Blog

The extensor tendons are held in place by the extensor retinaculum.

Extensor tendons of hand anatomy. The extensor tendon system of the wrist hand and fingers is more complex than the flexor tendon system. This is caused by injury to the extensor tendon at the last finger joint. Extensor tendon injuries and tenosynovitis represent clinical situations in which knowledge of this anatomy is use.

Figure 1 extensor tendons located on the back of the hand and fingers allow you to straighten your fingers and thumb figure 2 the mallet finger deformity causes a droop of the fingertip. The 6 extensor compartments of the wrist and intrinsic muscles of the hand comprise 23 musculotendinous units. Understanding of and familiarity with the extensor anatomy of the hand and ﬁngers by the radiologist is crucial for better assessment of pathologic conditions with mr imaging and optimization of this mo dality as a diagnostic tool.

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. Extensor tendons are thin tendons located on the back of the hand just under the skin. The extrinsic extensor muscles of the hand are located in the back of the forearm and have long tendons connecting them to bones in the hand where they exert their action.

J hand surg am 1995. The extensor tendon compartments of the wrist are six tunnels which transmit the long extensor tendons of the forearmthey are located on the posterior aspect of the wrist. The epb tendon is in the forearm and then runs along the radial side of the wrist.

Each tunnel is lined internally by a synovial sheath and separated from one another by a fibrous septa. This tendon also travels in the first compartment of the band that holds the tendons in position at the wrist. These particular tendons allow you to straighten your fingers and thumb and can be injured by a simple cut or jammed finger.

Extensor tendon compartments ligaments of the fingers flexor pulley system blood supply to hand wrist ligaments biomechanics. 202734 google scholar 30. El badawi mg butt mm al zuhair agh fadel ra.

Anatomy of the extensor tendons of the fingers. Extrinsic denotes their location outside the hand.

Figure 1 From Extensor Tendon Injuries Acute Management And