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对象和方法 33名慢性颞下颌关节紊乱患者,保守治疗4~6个月无效后,共行35侧关节盘切除术,术中未置入任何替代物。术后随访5~24年,平均随访9.3年。复查时行磁共振成像(magnetic reso-nance imagine,MRI)检查,包括T_1、T_2加权成像和三维快速稳定序列成像(3 dimensional fast imaging with asteady precession sequence,FISP-3D)检查,以10名健康成年人做对照。MRI重点观察囊内结构,尤其是关节间隙。以翼外肌的显像密度为中等密度,较翼外肌高者为高密度,低者为低密度。
Subjects and Methods Totally 33 patients with chronic temporomandibular joint disorder who underwent conservative treatment for 4 to 6 months were treated with 35-sided arthroplasty without any surgeries. The patients were followed up for 5-24 years and followed up for a mean of 9.3 years. During the review, magnetic resonance imaging (MRI) examinations were performed, including T_1, T_2 weighted imaging and FISP-3D, and 10 healthy adults People do the control. MRI focuses on the structure of the capsule, especially the joint space. To the outer pterygoid imaging density for the medium density, higher than the outer pyloricus for the high density, low for the low density.