The diagnosis of coronoid impingement using computed tomography.
- Author:
Jee Seon BAIK
1
;
Kyung Hoe HUH
;
Kwan Soo PARK
;
Moo Soon PARK
;
Min Suk HEO
;
Sam Sun LEE
;
Soon Chul CHOI
Author Information
1. Department of Oral and Maxillofacial Radiology, BK21, and Dental Research Institute, College of Dentistry, Seoul National University, Korea. raylee@snu.ac.kr
- Publication Type:Case Report
- Keywords:
Coronoid Impingement;
Trismus;
Tomography Scanners;
X-ray Computed
- MeSH:
Diagnosis*;
Hyperplasia;
Mouth;
Tomography, X-Ray Computed;
Trismus;
Zygoma
- From:Korean Journal of Oral and Maxillofacial Radiology
2005;35(4):231-234
- CountryRepublic of Korea
- Language:English
-
Abstract:
Coronoid impingement can cause limitation of mouth opening. In many cases, it appears to be related to the coronoid hyperplasia. We present a case of mouth opening limitation caused by coronoid impingement on the posterior surface of the zygomatic bone without coronoid hyperplasia. The bony changes in coronoid and zygoma including surface irregularity and discontinuity of the cortex and sclerotic change of inner medullary space were noted on computed tomography (CT) scans in different level of axial planes. Through another CT scans in open mouth position could demonstrate that those bony changes were caused by the contact of both surfaces against each other. In case coronoid impingement is suspected of the many possible causes, the open mouth CT scans will be needed to reveal the direct impingement of coronoid on zygoma even without coronoid hyperplasia.
