The project was supported by the New Zealand Lottery Health Research Grant (Reference No: 279585), the Natural Sciences Foundation of China (Reference No: 31071051), and Sun Yat-sen University Doctoral International Cooperation Research Project (Reference No: 82). The authors have no other funding, financial relationships, or conflicts of interest to disclose.
Micro-CT visualization of the cricothyroid joint cavity in cadavers†
Article first published online: 17 JAN 2012
Copyright © 2011 The American Laryngological, Rhinological, and Otological Society, Inc.
Volume 122, Issue 3, pages 614–621, March 2012
How to Cite
Chen, S., Wang, H., Fong, A. H. Y. and Zhang, M. (2012), Micro-CT visualization of the cricothyroid joint cavity in cadavers. The Laryngoscope, 122: 614–621. doi: 10.1002/lary.22504
- Issue published online: 21 FEB 2012
- Article first published online: 17 JAN 2012
- Accepted manuscript online: 6 JAN 2012 10:21AM EST
- Manuscript Accepted: 29 NOV 2011
- Manuscript Received: 21 OCT 2011
- Micro-computed tomography;
- sheet plastination;
- cricothyroid joint cavity;
- Level of Evidence: 1b.
To directly visualize the cricothyroid joint (CTJ) cavity of the human cadaver and to correlate the appearance of the CTJ cavity to its fibrous capsule.
Twenty-five cadavers (nine females and 16 males; age range, 67–95 years) were used for gross anatomy, micro-computed tomography (CT) arthrography, histology, E12 sheet plastination, and magnetic resonance imaging examinations. The cadavers were donated for the purposes of teaching and research under the Human Tissues Act.
Using micro-CT arthrography with intra-articular filling and sheet plastination technique, this study demonstrated that the dimension of the CTJ cavity was much larger than that of the articular surfaces, particularly at the superior and anterior aspects of the joint. Connective tissue fibers were regularly orientated and significantly strengthened in the posterior and inferior aspects of the CTJ capsule. Such fibrous configuration appeared to enhance the strength of the capsule itself rather than to shorten the distance between the articular surfaces. The size of the direct contact area of the opposing articular surfaces varied significantly between the sides of the same subject and among individuals.
This study supports the general view that the cricoid cartilage rotates in a visor-like fashion on the inferior cornu of the thyroid cartilage. However, the pivot for the CTJ rotation appears wobbly. The wobbly pivot may increase the joint mobility as the rotation allows the horizontal and vertical gliding movements of the CTJ.