髁突髓腔信号异常与颞下颌关节内紊乱关系的研究

目的探讨裸突髓腔信号异常与颗下领关节内紊乱(In印D)的关系。方法利用核磁共振成像(MRI ),对 44例颜下领关节紊乱病(TMD)患者88侧关节完成开闭口T1、闭口位T2加权成像,判定TMD患者的盘突关系及髓腔信号变化。结果TMD患者14.8%(13/88)表现髓腔信号异常,水肿型为II个关节,硬化型及混合型各1个关节,84.6%(11/13)存在TMJID;而75个髓腔信号正常关节中,33.3%(25/75)存在TMJID;髓腔信号异常与TMAD有显著相关性(P < 0.05)。结论关节盘移位是导致髓腔信号异常的原因之一。

Relationship between Condylar Marrow Signal Abnormalities and Temporomandibular Joint Internal Derangement

Objective To investigate the relationship between condylar marrow signal abnormalities and temporomandibular joint internal derangement (TMJID). Methods Oblique 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 Tl and hypointense T2) and combined edema and sclerosis pattern. Results Of 88 joints, 13(14.8%) joints showed condylar marrow signal abnormalities .among which 11 belonged to edema pattern and, 1 was sclerosis pattern and the other was the combined pattern. Of 13 joints with condylar marrow signal abnormalities, 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). Conclusion Disc displacement is one of the factors inducing condylar marrow signal abnormalities . The pathological process from disc displacement to osteonecrosis requires further study.