Hamate

Os hamatum

SkeletalSkeletonArmLeft and right

View left in 3D View right in 3D

What it is

Wedge-shaped distal-row bone on the little-finger side with a palmar hook (hamulus).

Function

Distal-row carpal: forms a rigid unit with the metacarpals and transmits grip forces to the forearm.

Size

≈ 14 × 17 × 14 mm

Clinical note

Its hook forms a wall of Guyon's canal and can break in golf or baseball swings.