Trapezium (bone)

Revision as of 17:03, 20 August 2012 by WikiBot (talk | contribs) (Robot: Automated text replacement (-{{SIB}} +, -{{EH}} +, -{{EJ}} +, -{{Editor Help}} +, -{{Editor Join}} +))
(diff) ← Older revision | Latest revision (diff) | Newer revision → (diff)
Jump to navigation Jump to search

Template:Infobox Bone

WikiDoc Resources for Trapezium (bone)

Articles

Most recent articles on Trapezium (bone)

Most cited articles on Trapezium (bone)

Review articles on Trapezium (bone)

Articles on Trapezium (bone) in N Eng J Med, Lancet, BMJ

Media

Powerpoint slides on Trapezium (bone)

Images of Trapezium (bone)

Photos of Trapezium (bone)

Podcasts & MP3s on Trapezium (bone)

Videos on Trapezium (bone)

Evidence Based Medicine

Cochrane Collaboration on Trapezium (bone)

Bandolier on Trapezium (bone)

TRIP on Trapezium (bone)

Clinical Trials

Ongoing Trials on Trapezium (bone) at Clinical Trials.gov

Trial results on Trapezium (bone)

Clinical Trials on Trapezium (bone) at Google

Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Trapezium (bone)

NICE Guidance on Trapezium (bone)

NHS PRODIGY Guidance

FDA on Trapezium (bone)

CDC on Trapezium (bone)

Books

Books on Trapezium (bone)

News

Trapezium (bone) in the news

Be alerted to news on Trapezium (bone)

News trends on Trapezium (bone)

Commentary

Blogs on Trapezium (bone)

Definitions

Definitions of Trapezium (bone)

Patient Resources / Community

Patient resources on Trapezium (bone)

Discussion groups on Trapezium (bone)

Patient Handouts on Trapezium (bone)

Directions to Hospitals Treating Trapezium (bone)

Risk calculators and risk factors for Trapezium (bone)

Healthcare Provider Resources

Symptoms of Trapezium (bone)

Causes & Risk Factors for Trapezium (bone)

Diagnostic studies for Trapezium (bone)

Treatment of Trapezium (bone)

Continuing Medical Education (CME)

CME Programs on Trapezium (bone)

International

Trapezium (bone) en Espanol

Trapezium (bone) en Francais

Business

Trapezium (bone) in the Marketplace

Patents on Trapezium (bone)

Experimental / Informatics

List of terms related to Trapezium (bone)


Overview

The trapezium bone (greater multangular bone) is a carpal bone, in what is commonly referred to as the wrist.

The trapezium is distinguished by a deep groove on its palmar surface. It is situated at the radial side of the carpus, between the scaphoid and the first metacarpal bone.

The etymology derives from the Greek trapezion which means "irregular quadrilateral;" literally, "a little table," from trapeza meaning table. Also, from tra- "four" and peza "foot" or "edge."

Surfaces

The superior surface is directed upward and medialward; medially it is smooth, and articulates with the scaphoid; laterally it is rough and continuous with the lateral surface.

The inferior surface is oval, concave from side to side, convex from before backward, so as to form a saddle-shaped surface for articulation with the base of the first metacarpal bone.

The dorsal surface is rough.

The palmar surface is narrow and rough. At its upper part is a deep groove, running from above obliquely downward and medialward; it transmits the tendon of the Flexor carpi radialis, and is bounded laterally by an oblique ridge. This surface gives origin to the Opponens pollicis and to the Abductor and Flexor pollicis brevis; it also affords attachment to the transverse carpal ligament.

The lateral surface is broad and rough, for the attachment of ligaments.

The medial surface presents two facets; the upper, large and concave, articulates with the trapezoid; the lower, small and oval, with the base of the second metacarpal.

Tubercle of trapezium

The tubercle of trapezium is a anatomic tubercle, where sometimes abductor pollicis brevis muscle attaches.

See also

Additional images

Template:Bones of upper extremity it:Trapezio (osso) nl:Os trapezium sk:Lichobežníkovitá väčšia kosť

Template:WH

Template:WS