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- What is the function and significance of the flexor pollicis longus muscle?Answered by verified global health professionalsThe flexor pollicis longus (FPL) is a deep muscle in the forearm that plays a crucial role in hand and thumb function. Here's an overview of its function and significance: Function Flexion of the Thumb: The primary function of the FPL is to flex the thumb at the interphalangeal joint (the joint between the two thumb bones). It also contributes to flexion at the metacarpophalangeal joint (the joint between the thumb and the hand). Grip and Pinch Strength: It allows for precise movements required for gripping objects, holding a pen, or pinching between the thumb and fingers. Coordination in Complex Movements: The FPL works in coordination with other muscles of the hand to perform intricate movements, such as typing or playing a musical instrument. Anatomical Significance Origin: It arises from the anterior surface of the radius and the adjacent interosseous membrane. Insertion: It attaches to the base of the distal phalanx of the thumb. Innervation: The anterior interosseous nerve, a branch of the median nerve, supplies the FPL. Blood Supply: It receives blood from the anterior interosseous artery. Clinical Significance Thumb Mobility: Impairment of the FPL, such as in nerve injuries (e.g. anterior interosseous nerve syndrome), can result in reduced thumb mobility and difficulty performing fine motor tasks. Tendon Injuries: FPL tendon injuries can occur due to trauma or repetitive strain, leading to challenges in thumb flexion. Carpal Tunnel Syndrome: Since the FPL tendon passes through the carpal tunnel, inflammation or compression in this area can affect its function.Read moreDr Preetika2 years exp · India · MBBS
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Flexor pollicis longus muscle - Wikipedia
The flexor pollicis longus is a muscle in the forearm and hand that flexes the thumb. It lies in the same plane as the flexor digitorum profundus. This muscle is unique to humans, being either rudimentary or absent in other primates. A meta-analysis indicated accessory flexor pollicis longus is present in … See more
Origin and insertion
It arises from the grooved anterior (side of palm) surface of the body of the radius, extending from immediately below the radial tuberosity and … See moreModern humans are unique among hominids in having a flexor pollicis longus (FPL) muscle belly that is separate from that of the flexor digitorum profundus (FDP). While the FPL … See more
• Gray H (1918). "The Muscles and Fasciæ of the Forearm". Gray's Anatomy of the Human Body. Archived from the original on 2012-01-23. … See more
Wikipedia text under CC-BY-SA license Flexor pollicis longus: Anatomy, innervation, function | Kenhub
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Flexor Pollicis Longus: Action, Origin, Insertion, …
May 5, 2023 · What is Flexor Pollicis Longus. Flexor pollicis longus (FPL) is one of the deep anterior forearm muscles that form the upper of the two deep muscular layers. The other two deep muscles in the anterior compartment are …
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Learn about the flexor pollicis longus, a muscle in the forearm that flexes the thumb. See its origin, insertion, action, innervation, blood supply and 3D model.
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Learn about the flexor pollicis longus muscle, which flexes the thumb and is part of the deep forearm compartment. Find out its origin, insertion, innervation, arterial supply and clinical …
Flexor Pollicis Longus Muscle Anatomy | OrthoFixar …
Jun 17, 2024 · The Flexor Pollicis Longus Muscle is one of three deep muscles in the forearm, alongside the flexor digitorum profundus and the pronator quadratus muscles. It’s also called the long flexor of the thumb (L. pollex, thumb).
Flexor Pollicis Longus: Anatomy, Function, Exercises …
Learn the anatomy, origin, and function of the flexor pollicis longus. Discover effective exercises to strengthen thumb flexion with detailed muscle illustrations.
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