Significance of Abductor pollicis longus
Abductor pollicis longus is a tendon found in the wrist, often impacted by De Quervain’s tenosynovitis. This muscle is innervated by the posterior interosseous nerve, which plays a crucial role in the thumb's abduction at the carpometacarpal joint. Its functionality can be evaluated through specific tests targeting thumb movement. Understanding the significance of the abductor pollicis longus contributes to diagnosing and treating conditions affecting thumb mobility and wrist health.
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The concept of Abductor pollicis longus in scientific sources
The Abductor pollicis longus muscle, innervated by the posterior interosseous nerve, facilitates thumb abduction at the carpometacarpal joint and is commonly implicated in De Quervain’s tenosynovitis affecting its tendon in the wrist.
From: South African Journal of Physiotherapy
(1) This muscle is involved in hand function, which is listed in the tables, as well as the dorsal interossei, palmar interossei, and others.[1] (2) This is a part of the body affected by tenosynovitis, and is one of the uses of transverse friction when the sheaths are involved, according to the information.[2]
From: The Malaysian Journal of Medical Sciences
(1) This muscle is supplied by the posterior interosseous nerve, and its function is assessed by testing abduction of the thumb at the carpometacarpal joint.[3]