Anatomy Atlases: Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: A: Abductor Pollicis Brevis

Anatomy Atlases(tm) : A digital library of anatomy information

Illustrated Encyclopedia of Human Anatomic Variation: Opus I: Muscular System: Alphabetical Listing of Muscles: A

Abductor Pollicis Brevis

Ronald A. Bergman, PhD
Adel K. Afifi, MD, MS
Ryosuke Miyauchi, MD
Peer Review Status: Internally Peer Reviewed

The abductor pollicis brevis is often divided into outer and inner parts, or it may receive slips from the navicular bone or styloid process of the radius. A third head arising from opponens pollicis has been reported. An accessory slip is frequently found joining the muscle with abductor pollicis longus. More rarely, accessory slips connect abductor pollicis with palmaris longus, extensor carpi radialis longus, accessory extensor carpi radialis, opponens or flexor pollicis brevis.

A cutaneous slip is frequently present attached to the skin over the proximal part of the thenar eminence, and inserted distally on the radial side of the first phalanx. The absence of abductor pollicis has been reported. Syn.: m. abductor externus (Sömmerring).

References

Brottet, -. (1876) Long abducteur du pouce, surnuméraires. Lyon Med. 21:475.

Henle, J. (1871) Handbuch der Muskellehre des Menschen, in Handbuch der systematischen Anatomie. Verlag von Friedrich Vieweg und Sohn., Braunschweig.

Macalister, A. (1875) Additional observations on muscular anomalies in human anatomy (third series), with a catalogue of the principal muscular variations hitherto published. Trans. Roy. Irish Acad. Sci. 25:1- 134.

Section Top | Title Page

Anatomy Atlases is curated by Michael P. D'Alessandro, M.D. and Ronald A. Bergman, Ph.D.

Please send us comments by filling out our Comment Form.

"Anatomy Atlases", the Anatomy Atlases logo, and "A digital library of anatomy information" are all Trademarks of Michael P. D'Alessandro, M.D.

Anatomy Atlases is funded in whole by Michael P. D'Alessandro, M.D. Advertising is not accepted.

Your personal information remains confidential and is not sold, leased, or given to any third party be they reliable or not.

The information contained in Anatomy Atlases is not a substitute for the medical care and advice of your physician. There may be variations in treatment that your physician may recommend based on individual facts and circumstances.

URL: http://www.anatomyatlases.org/