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os trapezoideum, os multangulum minus
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Carpuspng
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'''BONES OF HAND'''<BR>''Proximal:'' A=, F= Trapezoid , G= Capitate , H= Hamate <BR>
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The left lesser multangular bone
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articulates with four bones:<BR> Scaphoid proximally<BR> Second Metacarpal distally<BR> Trapezium Bone laterally<BR> Capitate medially
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Trapezoid+Bone
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A02835232087319150805
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12598807
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The ('''lesser multangular bone''') is a
Carpal Bone in
Tetrapod s, including humans. It is the smallest bone in the
Distal Row . It may be known by its
Wedge -shaped form, the broad end of the wedge constituting the
Dorsal , the narrow end the palmar surface; and by its having four articular facets touching each other, and separated by sharp edges.
The etymology derives from the Greek ''trapezion'' which means "irregular quadrilateral," from ''tra-'' "four" and ''peza'' "foot" or "edge." Literally, "a little table" from ''trapeza'' meaning "table" and ''-oeides'' "shaped."
The ''
Superior Surface '', quadrilateral, smooth, and slightly concave, articulates with the
Scaphoid .
The ''
Inferior Surface '' articulates with the
Proximal end of the
Second Metacarpal Bone ; it is convex from side to side, concave from before backward and subdivided by an elevated ridge into two unequal facets.
The ''
Dorsal '' and ''
Palmar surfaces'' are rough for the attachment of ligaments, the former being the larger of the two.
The ''
Lateral Surface '', convex and smooth, articulates with the
Trapezium .
The ''
Medial Surface '' is concave and smooth in front, for articulation with the
Capitate ; rough behind, for the attachment of an interosseous
Ligament .
