Application of MRI in indirect temporomandibular joint injury without condylar fracture.
OBJECTIVE
To discuss the application of MRI in indirect temporomandibular joint injury without condylar fracture.


METHODS
MRI examination on temporomandibular joint was conducted in 28 patients with indirect injury to temporomandibular joint without condylar fracture. The scanning sequence included T(1)WI, PDWI on oblique sagittal section at both open and closed mouth positions, and T(1)WI, T(2)WI on oblique coronal section. The MRI appearance was analyzed by 2 senior radiologists.


RESULTS
Among the 56 temporomandibular joints of 28 patients, 35 joints exhibited pathological changes on MRI, in which there were 9 bone injuries, 21 articular disc dislocation, 24 intracapsular hematocele and hydrops.


CONCLUSIONS
MRI can clearly reveal bone injury, articular disc dislocation as well as articular capsule abnormality in the indirect injury of temporomandibular joint without condylar fracture. It is highly advocated in clinical use.
Wang
Mei-hao
MH
Department of Radiology, First Affiliated Hospital of Wenzhou Medical College, Wenzhou 325000, China. wzwmh@yahoo.com.cn
Fang
Yi-ming
YM
Li
Jin-lin
JL
Wang
Jing-xiao
JX
Yuan
Xiang-zhi
XZ
Deng
Yong
Y
Li
Jian-ce
JC
Yuan
Yun-jun
YJ
Chen
Wei-jian
WJ
Wu
En-fu
EF
D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D008446:Maxillofacial Injuries / Q000175:diagnosis*; D008875:Middle Aged; D013704:Temporomandibular Joint / Q000293:injuries*