CAPITATE BONE

The 'capitate bone' is a bone in the human hand. The capitate bone is the largest of the carpal bones, and occupies the center of the wrist. It presents, above, a rounded portion or head, which is received into the concavity formed by the scaphoid and lunate bones; a constricted portion or neck; and below this, the body.
The etymology derives from the Latin ''capitātus'', "having a head," from ''capit-'', meaning "head."

Contents

Surfaces

Articulations

See also

Additional images

Surfaces

The ''superior surface'' is round, smooth, and articulates with the lunate bone.
The ''inferior surface'' is divided by two ridges into three facets, for articulation with the second, third, and fourth metacarpal bones, that for the third being the largest.
The ''dorsal surface'' is broad and rough.
The ''volar surface'' is narrow, rounded, and rough, for the attachment of ligaments and a part of the Adductor pollicis muscle.
The ''lateral surface'' articulates with the lesser multangular by a small facet at its anterior inferior angle, behind which is a rough depression for the attachment of an interosseous ligament. Above this is a deep, rough groove, forming part of the neck, and serving for the attachment of ligaments; it is bounded superiorly by a smooth, convex surface, for articulation with the navicular.
The ''medial surface'' articulates with the hamate by a smooth, concave, oblong facet, which occupies its posterior and superior parts; it is rough in front, for the attachment of an interosseous ligament.

Articulations

The capitate articulates with seven bones: the scaphoid and lunate proximally, the second metacarpal, third metacarpal, and fourth metacarpal distally, the lesser multangular on the radial side, and the hamate on the ulnar side.

See also

★ Bone terminology

★ Terms for anatomical location

Additional images