Relationship between condylar marrow signal abnormalities and temporomandibular joint internal derangement.
- Author:
Guo-liang JIAO
1
;
Er-jun ZHAO
;
Yong-hai WANG
;
Yu-feng ZHU
;
Yu-ping DU
Author Information
- Publication Type:Journal Article
- MeSH: Adolescent; Adult; Aged; Child; Female; Humans; Magnetic Resonance Imaging; Male; Mandibular Condyle; pathology; Middle Aged; Temporomandibular Joint Disc; pathology; Temporomandibular Joint Disorders; diagnosis; pathology
- From: West China Journal of Stomatology 2004;22(5):426-428
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo investigate the relationship between condylar marrow signal abnormalities and temporomandibular joint internal derangement (TMJID).
METHODSOblique sagittal T1 weighted MR imaging at closed and open mouth and Oblique sagittal T2 weighted MR imaging at closed mouth were obtained from 88 joints of 44 patients suffering from TMD. Condylar marrow signal abnormalities were reviewed and classified into bone marrow edema pattern (hypointense T1, hyperintense T2), sclerosis pattern (hypointense T1 and hypointense T2) and combined edema and sclerosis pattern.
RESULTSOf 88 joints, 13 (14.8%) joints showed condylar marrow signal abnomalities, among which 11 belonged to edema pattern and, 1 was sclerosis pattern and the other was the combined patten. Of 13 joints with condylar marrow signal abnomalities, 11 (84.6%) had TMJID. Of 75 joints with normal marrow signal, 25 (33.3%) joints had TMJID. There was significant correlation between condylar marrow signal abnormalities and TMJID (P < 0.05).
CONCLUSIONDisc displacement is one of the factors inducing condylar marrow signal abnormalities. The pathological process from disc displacement to osteonecrosis requires further study.
