LUNATE BONE

The 'lunate bone' ('semilunar bone') is a bone in the human hand that may be distinguished by its deep concavity and crescentic outline. It is situated in the center of the proximal row of the carpus, or wrist, between the scaphoid and triangular bone.
The etymology derives from the Latin ''luna'' which means "moon."

Contents

Surfaces

See also

Additional images

Surfaces

The 'superior surface', convex and smooth, articulates with the radius.
The 'inferior surface' is deeply concave, and of greater extent from before backward than transversely: it articulates with the head of the capitate, and, by a long, narrow facet (separated by a ridge from the general surface), with the hamate.
The 'dorsal' and 'palmar surfaces' are rough, for the attachment of ligaments, the former being the broader, and of a somewhat rounded form.
The 'lateral surface' presents a narrow, flattened, semilunar facet for articulation with the scaphoid.
The 'medial surface' is marked by a smooth, quadrilateral facet, for articulation with the triangular bone.

See also

★ Bone terminology

★ Terms for anatomical location

Additional images