Department of Maxillofacial Radiology, Institute of Clinical Dentistry, University of Oslo, Blindern, Oslo, Norway.
Radiology. 2010 Jul;256(1):191-200. doi: 10.1148/radiol.10091810.
To assess the long-term temporomandibular joint (TMJ) manifestations of juvenile idiopathic arthritis (JIA), as depicted at computed tomography (CT) and magnetic resonance (MR) imaging, in 47 adult patients.
The study was approved by a regional committee for medical research ethics, and informed consent was obtained from all patients. Forty-seven patients with JIA (32 women, 15 men; mean age, 35 years) were examined, on average, 30 years after the initial diagnosis. The findings of TMJ imaging, including CT and MR imaging, were evaluated by three observers. Bone and disk abnormalities, joint effusion, bone marrow abnormalities, and contrast enhancement were analyzed.
The TMJs were involved in 33 (70%) of the 47 patients with JIA, with bilateral involvement in 29 patients. Slight to moderate contrast enhancement was observed on the images obtained in 14 (42%) of the 33 patients with TMJ JIA abnormalities. All main joint components were abnormal in 28 of the 33 patients, mainly showing flat deformed condyles, wide flat fossae, and thin or perforated disks in the normal position, or absent disks. Condylar concavity or bifidity, and secondary osteoarthritis were found in approximately half of the abnormal joints.
Long-term JIA manifestations in the TMJs, as demonstrated at CT and MR imaging, were frequent, usually bilateral, and characterized by mandibular condyle and temporal bone deformities, abnormal disk morphology, and, rather frequently, osteoarthritis and mild synovitis.
通过 CT 和磁共振成像（MR）评估 47 例成年患者的幼年特发性关节炎（JIA）的长期颞下颌关节（TMJ）表现。
该研究得到了地区医学研究伦理委员会的批准，并获得了所有患者的知情同意。对 47 例 JIA 患者（32 名女性，15 名男性；平均年龄 35 岁）进行了检查，平均在初始诊断后 30 年进行了检查。由 3 位观察者评估 TMJ 成像（包括 CT 和 MR 成像）的结果。分析了骨和盘异常、关节积液、骨髓异常和对比增强。
33 例（70%）JIA 患者的 TMJ 受累，29 例患者双侧受累。在 33 例存在 TMJ JIA 异常的患者中，有 14 例（42%）观察到轻度至中度对比增强。在 28 例存在 TMJ 异常的患者中，所有主要关节成分均异常，主要表现为髁突变平变形、牙槽变宽变平、正常位置的盘变薄或穿孔，或盘缺失。约一半异常关节存在髁突凹陷或分叉，以及继发性骨关节炎。
通过 CT 和 MR 成像显示，TMJ 的长期 JIA 表现较为常见，通常为双侧，表现为下颌骨髁突和颞骨畸形、盘形态异常，且常发生骨关节炎和轻度滑膜炎。
