Tags: Anatomical Structure, Bone.
The fourth metacarpal bone (metacarpal bone of the ring finger) is shorter and smaller than the third.The base is small and quadrilateral; its superior surface presents two facets a large one medially for articulation with the hamate and a small one laterally for the capitate.On the radial side are two oval facets for articulation with the third metacarpal; and on the ulnar side a single concave facet for the fifth metacarpal.
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