MRI 分析症状患者颞下颌关节骨变化与关节盘位置的关系。
MRI analysis of the relationship between bone changes in the temporomandibular joint and articular disc position in symptomatic patients.
机构信息
University of Sao Paulo, Sao Paulo, Brazil.
出版信息
Dentomaxillofac Radiol. 2012 Jul;41(5):367-72. doi: 10.1259/dmfr/79317853. Epub 2012 Jan 12.
OBJECTIVES
The aim of this study was to investigate bone changes in the condyle, articular eminence and glenoid fossa in relation to the position of the articular disc.
METHODS
148 temporomandibular joints (TMJs) of 74 symptomatic patients who underwent MRI were evaluated. The position of the disc was classified as either normal (N), disc displacement with reduction (DDwR), disc displacement without reduction (DDwoR) and posterior displacement (PD). Bone changes were investigated in the condyle and temporal components of the TMJ and classified as osteophytosis, sclerosis or erosion.
RESULTS
There were no bone changes in the glenoid fossa of the temporal bone. Of the total number of TMJs studied, 94 (63.5%) were N, 34 (23%) presented DDwoR, 19 (12.8%) presented DDwR and 1 (0.7%) presented PD. The bone changes in the condyle and posterior aspect of the articular eminence were associated with the position of the disc. The bone changes in the anterior aspect of the articular eminence were not associated with the position of the disc.
CONCLUSION
In cases of DDwoR, bone changes in the condyles were more common. The combination of erosion and osteophytosis in the condyle and the bone changes of the posterior aspect of the articular eminence were associated with disc position.
目的
本研究旨在探讨关节盘位置与髁突、关节结节和关节窝骨变化的关系。
方法
对 74 例有症状并接受 MRI 检查的患者的 148 个颞下颌关节（TMJ）进行评估。关节盘位置分为正常（N）、可复性关节盘前移位（DDwR）、不可复性关节盘前移位（DDwoR）和后移位（PD）。研究中观察了髁突和 TMJ 颞骨部分的骨变化，并分为骨赘、硬化或侵蚀。
结果
颞骨关节窝无骨变化。在研究的 TMJ 总数中，94 个（63.5%）为 N，34 个（23%）为 DDwoR，19 个（12.8%）为 DDwR，1 个（0.7%）为 PD。髁突和关节结节后份的骨变化与关节盘的位置有关。关节结节前份的骨变化与关节盘的位置无关。
结论
在 DDwoR 病例中，髁突的骨变化更为常见。髁突的侵蚀和骨赘与关节结节后份的骨变化与关节盘位置有关。
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