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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."
Additional recommended knowledge
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.
|This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Trapezium_(bone)". A list of authors is available in Wikipedia.|