Abductor Pollicis Brevis: Difference between revisions
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== Description | == Description<ref>Cael C. Functional anatomy. Philadelphia, PA: Wolters Kluwer/Lippincott, Williams & Wilkins; 2011.</ref> == | ||
[[File:Abductor pollicis brevis.png|thumb|418x418px]] | [[File:Abductor pollicis brevis.png|thumb|418x418px]] | ||
Abductor pollicis brevis [[muscle]] is the most lateral and superficial of the three muscles forming the thenar emirence. | Abductor pollicis brevis [[muscle]] is the most lateral and superficial of the three muscles forming the thenar emirence. | ||
=== '''Origin''' === | === '''Origin'''<ref>Palastanga N, Field D, Soames R. Anatomy and human movement. 4th ed. Oxford: Butterworth-Heinemann; 2002.</ref> === | ||
It takes its origin from the front of transverse carpal ligament, extending into the tubercles of scaphoid and trapezium with an occasional contribution from the tendon of abductor pollicis [[Abductor pollicis longus|longus]]. | It takes its origin from the front of transverse carpal ligament, extending into the tubercles of scaphoid and trapezium with an occasional contribution from the tendon of abductor pollicis [[Abductor pollicis longus|longus]]. | ||
=== Insertion === | === Insertion<ref>Lippert L, Lippert L. Clinical kinesiology and anatomy. 4th ed. Philadelphia: F.A. Davis; 2006.</ref> === | ||
The muscle has a short [[Tendon Anatomy|tendon]] which attaches to the radial side of the base of the proximal phalanx of the thumb. | The muscle has a short [[Tendon Anatomy|tendon]] which attaches to the radial side of the base of the proximal phalanx of the thumb. | ||
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It acts to abduct the carpometacarpal joint of the thumb. | It acts to abduct the carpometacarpal joint of the thumb. | ||
== Clinical relevance == | == Clinical relevance<ref>Harrison M. Common problems. Neurological Skills. 1987;:63-99.</ref> == | ||
* [[carpal tunel syndrome]]. | * [[carpal tunel syndrome]]. | ||
* Median and [[Ulnar Nerve|ulnar]] nerve lesion. | * Median and [[Ulnar Nerve|ulnar]] nerve lesion. | ||
Revision as of 16:21, 21 September 2020
Original Editor - User Name
Top Contributors - Anneta Adamou, Saumya Srivastava, Chrysolite Jyothi Kommu and Kim Jackson
Description[1][edit | edit source]
Abductor pollicis brevis muscle is the most lateral and superficial of the three muscles forming the thenar emirence.
Origin[2][edit | edit source]
It takes its origin from the front of transverse carpal ligament, extending into the tubercles of scaphoid and trapezium with an occasional contribution from the tendon of abductor pollicis longus.
Insertion[3][edit | edit source]
The muscle has a short tendon which attaches to the radial side of the base of the proximal phalanx of the thumb.
Nerve[edit | edit source]
Median nerve C8, T1.
Artery[edit | edit source]
Princeps pollicis artery.
Function[edit | edit source]
It acts to abduct the carpometacarpal joint of the thumb.
Clinical relevance[4][edit | edit source]
- carpal tunel syndrome.
- Median and ulnar nerve lesion.
- Syringomyelia
- Motor neurone disease
- Peripheral neuropathy
Assessment[edit | edit source]
Treatment[edit | edit source]
Resources[edit | edit source]
- ↑ Cael C. Functional anatomy. Philadelphia, PA: Wolters Kluwer/Lippincott, Williams & Wilkins; 2011.
- ↑ Palastanga N, Field D, Soames R. Anatomy and human movement. 4th ed. Oxford: Butterworth-Heinemann; 2002.
- ↑ Lippert L, Lippert L. Clinical kinesiology and anatomy. 4th ed. Philadelphia: F.A. Davis; 2006.
- ↑ Harrison M. Common problems. Neurological Skills. 1987;:63-99.
