Extrinsic denotes their location outside the hand.
10+ Anatomy Of Hand Extensor Tendons. Extensor tendon injuries are commonly diagnosed in the emergency department (ed). Consequently, they are highly susceptible to injury from lacerations, bites, burns, or blunt trauma.
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Anatomy extensor tendons hand tendons. Carpal bones, metacarpals and phalanges. At mp joint level communis tendons are joined by by juncturae tendinum.
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The capsule, extensor tendon, and skin are very thin and lax dorsally, allowing for both phalanx bones to flex more. Tendons enter the hand beneath extensor retinaculum. Extensor pollicis brevis and abductor pollicis longus, which run from the muscles in the top of the forearm and enable movement of the thumb. The tendons travel down the forearm through a tough band of tissue on top of the wrist.