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.
Clinical relevance [ edit ]
A shortend fourth metacarspal bone can be a
symptom of Kallmann syndrome, a genetic condition which results in the failure to commence or the non-completion of puberty. A short fourth metacarpal bone can also be found in Turner syndrome, a disorder involving sex chromosomes.
fracture of the fourth and/or fifth metacarpal bones transverse neck secondary due to axial loading is known as a boxer's fracture. [1 ]
Additional images [ edit ]
Fourth metacarpal bone of the left hand (shown in red). Animation.
Fourth metacarpal bone of the left hand. Close up.
Palmer view of the left hand (fourth metacarpal shown in yellow).
Dorsal view of the left hand (fourth metacarpal shown in yellow).
See also [ edit ]
References [ edit ]
^ Shultz, S. J., Houglum, P. A., Perrin, D. H. (2010). Examination of Musculoskeletal Injuries. Chicago: Human Kinetics
This article incorporates text from a public domain edition of Gray's Anatomy .
Pectoral girdle, clavicle