Base of Fourth Metacarpal Bone

Description

The base of fourth metacarpal bone is the expanded, cube-like, proximal end of the bone. It is the proximal continuation of its body and contains the:

—proximal articular facet of fourth metacarpal bone;

—capitate articular facet of fourth metacarpal bone;

—third metacarpal articular facet of fourth metacarpal bone;

—fifth metacarpal articular facet of fourth metacarpal bone.

The base of fourth metacarpal bone provides attachment sites for the:

—palmar metacarpal ligaments;

—dorsal metacarpal ligaments;

—palmar carpometacarpal ligaments;

—dorsal carpometacarpal ligaments.