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Zona conoidea of the elbow: another articulation between the radial head and lateral trochlear of the elbow.
- Source :
-
The Journal of bone and joint surgery. British volume [J Bone Joint Surg Br] 2012 Apr; Vol. 94 (4), pp. 517-22. - Publication Year :
- 2012
-
Abstract
- The zona conoidea comprises the area of the lateral trochlear ridge of the humerus. The purpose of this study is to reintroduce this term 'zona conoidea' to the discussion of the human elbow and to investigate its significance in the development of osteoarthritis of the elbow. The upper extremities of 12 cadavers were prepared. With the forearm in neutral, pronation and supination, the distance between the bevel of the radial head and zona conoidea was inspected. A total of 12 healthy volunteers had a CT scan. The distance between the zona conoidea and the bevelled rim of the radial head was measured in these positions. In the anatomical specimens, early osteo-arthritic changes were identified in the posteromedial bevelled rim of the radial head, and the corresponding zona conoidea in supination. Measurement in the CT study showed that in full supination, the distance between the bevel of the radial head and the zona conoidea was at a minimum. This study suggests that the significant contact between the bevel of the radial head and the zona conoidea in supination is associated with the initiation of osteoarthritis of the elbow in this area.
- Subjects :
- Aged
Aged, 80 and over
Biomechanical Phenomena
Elbow Joint diagnostic imaging
Elbow Joint physiopathology
Female
Humans
Humerus diagnostic imaging
Humerus pathology
Humerus physiopathology
Male
Osteoarthritis diagnostic imaging
Osteoarthritis physiopathology
Pronation physiology
Radius diagnostic imaging
Radius physiopathology
Supination physiology
Tomography, X-Ray Computed
Elbow Joint pathology
Osteoarthritis pathology
Radius pathology
Subjects
Details
- Language :
- English
- ISSN :
- 2044-5377
- Volume :
- 94
- Issue :
- 4
- Database :
- MEDLINE
- Journal :
- The Journal of bone and joint surgery. British volume
- Publication Type :
- Academic Journal
- Accession number :
- 22434469
- Full Text :
- https://doi.org/10.1302/0301-620X.94B4.27842