Flexor pollicis muscle

From WikiMD's Wellness Encyclopedia

(Redirected from Musculus flexor pollicis)

Flexor Pollicis Longus Muscle

Flexor pollicis longus muscle (shown in red). Image via Gray's Anatomy.

The Flexor Pollicis Longus Muscle is one of the three deep muscles of the anterior compartment of the forearm that plays a crucial role in the flexion of the thumb. It is located in the forearm and extends into the hand, where it allows for the bending and gripping movements of the thumb.

Origin and Insertion[edit | edit source]

The Flexor Pollicis Longus originates from the middle half of the anterior surface of the radius and the adjacent interosseous membrane. It inserts into the base of the distal phalanx of the thumb.

Innervation[edit | edit source]

The muscle is innervated by the anterior interosseous nerve, a branch of the median nerve.

Function[edit | edit source]

The primary function of the Flexor Pollicis Longus is to flex the thumb at all joints, including the carpometacarpal joint, metacarpophalangeal joint, and interphalangeal joint. This allows for the thumb to oppose the other fingers, a key function in the human hand's ability to grasp and manipulate objects.

Clinical Significance[edit | edit source]

Damage to the Flexor Pollicis Longus can result in a loss of thumb flexion, significantly impacting hand function. This can occur due to nerve injury, tendon injury, or muscle strain.

See Also[edit | edit source]

References[edit | edit source]



WikiMD
Navigation: Wellness - Encyclopedia - Health topics - Disease Index‏‎ - Drugs - World Directory - Gray's Anatomy - Keto diet - Recipes

Search WikiMD

Ad.Tired of being Overweight? Try W8MD's physician weight loss program.
Semaglutide (Ozempic / Wegovy and Tirzepatide (Mounjaro / Zepbound) available.
Advertise on WikiMD

WikiMD's Wellness Encyclopedia

Let Food Be Thy Medicine
Medicine Thy Food - Hippocrates

Medical Disclaimer: WikiMD is not a substitute for professional medical advice. The information on WikiMD is provided as an information resource only, may be incorrect, outdated or misleading, and is not to be used or relied on for any diagnostic or treatment purposes. Please consult your health care provider before making any healthcare decisions or for guidance about a specific medical condition. WikiMD expressly disclaims responsibility, and shall have no liability, for any damages, loss, injury, or liability whatsoever suffered as a result of your reliance on the information contained in this site. By visiting this site you agree to the foregoing terms and conditions, which may from time to time be changed or supplemented by WikiMD. If you do not agree to the foregoing terms and conditions, you should not enter or use this site. See full disclaimer.
Credits:Most images are courtesy of Wikimedia commons, and templates Wikipedia, licensed under CC BY SA or similar.

Contributors: Prab R. Tumpati, MD