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head of radius

caput radii

The head of the radius has a cylindrical form, and on its upper surface is a shallow cup or fovea for articulation with the capitulum (or capitellum) of the humerus. The circumference of the head is smooth; it is broad medially where it articulates with the radial notch of the ulna, narrow in the rest of its extent, which is embraced by the annular ligament. The deepest point in the fovea is not axi-symmetric with the long axis of the radius, creating a cam effect during pronation and supination[WP].

On this page
Type Ligament
Parent Structure zone of long bone
Latin Name caput radii
FMA ID 33773

Frequently Asked Questions

What is the head of radius?

The head of the radius has a cylindrical form, and on its upper surface is a shallow cup or fovea for articulation with the capitulum (or capitellum) of the humerus. The circumference of the head is smooth; it is broad medially where it articulates with the radial notch of the ulna, narrow in the re

What is the Latin name for the head of radius?

The Latin name for the head of radius is caput radii.

References

  1. Foundational Model of Anatomy — FMA:33773 Reference anatomy ontology (University of Washington)
  2. UBERON — UBERON:0001012 Cross-species anatomy ontology (EMBL-EBI Ontology Lookup Service)

Medical Disclaimer

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Educational Disclaimer

This content is for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always consult a qualified healthcare provider for medical decisions.

Data sources: Terminologia Anatomica, Foundational Model of Anatomy, Wikidata.