Palmaris Longus: Difference between revisions
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== Description == | == Description == | ||
[[File:Palmaris-longus.jpg|thumb|<ref name=":0">Derek Moore. ''Palmaris Longus''. Available from: https://www.orthobullets.com/anatomy/10023/palmaris-longus [Accessed: 12 June 2018]</ref> Pictorial representation of an isolated Palmaris Longus muscle in the flexor compartment of the forearm]] | [[File:Palmaris-longus.jpg|thumb|<ref name=":0">Derek Moore. ''Palmaris Longus''. Available from: https://www.orthobullets.com/anatomy/10023/palmaris-longus [Accessed: 12 June 2018]</ref> Pictorial representation of an isolated Palmaris Longus muscle in the flexor compartment of the forearm|220x220px]] | ||
The Palmaris longus (PL) muscle is a long, slender muscle which is usually present in the volar compartment of the forearm, interposed between the flexor carpi ulnaris and the flexor carpi radialis muscles. | The Palmaris longus (PL) muscle is a long, slender muscle which is usually present in the volar compartment of the forearm, interposed between the flexor carpi ulnaris and the flexor carpi radialis muscles. | ||
Revision as of 08:56, 15 June 2018
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Description[edit | edit source]
The Palmaris longus (PL) muscle is a long, slender muscle which is usually present in the volar compartment of the forearm, interposed between the flexor carpi ulnaris and the flexor carpi radialis muscles.
However, it is currently accepted as a vestigial muscle since studies have shown that almost 30% of the population could be lacking this muscle either in one forearm (unilateral) or both the forearms (bilateral) but the percentage can always vary. The peculiarity associated with this muscle is not merely its presence or absence, but it's high degree of anatomical variations even when present.
Anatomy[edit | edit source]
Origin[2][edit | edit source]
Medial epicondyle of the humerus via the common flexor tendon
Insertion[2][edit | edit source]
Palmar Aponeurosis and Flexor Retinaculum at the wrist joint
Nerve Supply[2][edit | edit source]
Median Nerve
Arterial supply[1][edit | edit source]
Ulnar Artery
Function[edit | edit source]
- Palmaris longus synergistically works with the long flexors of the forearm to bring about flexion at the radiocarpal joint.
- Apart from this, the muscle also helps in tightening the palmar aponeurosis.
