Circumferentia articularis

As circumferentia articular (. Lat circumferentia "encirclement" and articulatio " joint ") is referred to in the anatomy of two joint surfaces of the forearm bones:

• The circumferentia articularis of the ulna lies at its lower end and articulates with the incisura ulnaris on the radius .
• The circumferentia articularis of the spoke lies at its upper end and surrounds the spoke head like a wreath. It is connected to the radial notch of the ulna.

Both articular surfaces are part of the ulnar-spoke joints ( articulatio radioulnaris proximalis and articulatio radioulnaris distalis ), which enable turning movements of the hand ( pronation and supination ). They form the joint head of the respective wheel joint .

literature

• F.-V. Salomon: Bony skeleton . In: Salomon, F.-V. ua (Hrsg.): Anatomie für die Tiermedizin. Enke-Verlag, Stuttgart, 2nd ext. Edition 2008, pp. 37–110. ISBN 978-3-8304-1075-1