head of ulna

(redirected from caput ulnae)

head of ul·na

[TA]
the small rounded distal extremity of the ulna articulating with the ulnar notch of the radius and the articular disk.
Synonym(s): caput ulnae [TA]
References in periodicals archive ?
This process progresses to the development of caput ulnae syndrome in which the carpus subluxates volarly and supinates while the ulnar head displaces dorsally.
Backdahl M: The caput ulnae syndrome in rheumatoid arthritis: a study of the morphology, abnormal anatomy and clinical picture.