page_title: Carpometacarpal bossing
hierarchical_section_title: Carpometacarpal bossing
caption_attribution_description: Deutsch: Carpal boss in der Computertomographie: VR-3D-Rekonstruktion. Pseudarthrotische Verbindung der Knochenvorsprünge am Metacarpale 3 und am Os trapezoideum.
context_page_description: Carpometacarpal bossing is a small, immovable mass of bone on the back of the wrist. The mass occurs in one of the joints between the carpus and metacarpus of the hand, called the carpometacarpal joints, where a small immovable protuberance occurs when this joint becomes swollen or bossed.
  The joint between the index metacarpal and the capitate is a fibrous non-mobile joint. Some people have a gene that leads to this growth. It looks like arthritis on X-ray. It looks like a ganglion on the hand, but more towards the fingertips.
context_section_description: Carpometacarpal bossing (or metacarpal/carpal bossing) is a small, immovable mass of bone on the back of the wrist. The mass occurs in one of the joints between the carpus and metacarpus of the hand, called the carpometacarpal joints, where a small immovable protuberance occurs when this joint becomes swollen or bossed.
  The joint between the index metacarpal and the capitate is a fibrous non-mobile joint.  Some people have a gene that leads to this growth.  It looks like arthritis (bone spurs on each side of the joint) on X-ray.  It looks like a ganglion on the hand, but more towards the fingertips.
caption: Carpal boss VR-3D-Reconstruction
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