Kneeland J B, Ryan D E, Carrera G F, Jesmanowicz A, Froncisz W, Hyde J S
Radiology. 1987 Oct;165(1):179-81. doi: 10.1148/radiology.165.1.3628767.
Magnetic resonance (MR) imaging with surface coils was performed on 43 temporomandibular joints with disk prostheses in 28 patients who had pain, dysfunction, or both after implantation of the prostheses. Fracture was diagnosed prospectively as a discontinuity of the prosthesis on the MR examination; the sensitivity and specificity of MR imaging for this diagnosis was determined on the basis of these studies. All patients underwent surgery, after which the final diagnosis was made. MR imaging was found to have a sensitivity of 0.81 and a specificity of 0.91. Other MR findings included an abnormal amount of soft tissue surrounding the disk, thinning of the disk, osteophytes, and erosion of the condyle. An as yet unexplained artifact was frequently seen and obscured the prostheses in four of the six false-negative studies. The one false-positive case resulted from the interpretation of a markedly thinned but intact region of the prosthesis as a fracture.
对28例植入颞下颌关节盘假体后出现疼痛、功能障碍或两者皆有的患者的43个颞下颌关节进行了表面线圈磁共振（MR）成像检查。在MR检查中，骨折被前瞻性诊断为假体的连续性中断；基于这些研究确定了MR成像对该诊断的敏感性和特异性。所有患者均接受了手术，术后做出最终诊断。发现MR成像的敏感性为0.81，特异性为0.91。其他MR表现包括盘周软组织量异常、盘变薄、骨赘和髁突侵蚀。在六项假阴性研究中的四项中，经常出现一种尚未解释清楚的伪影，使假体模糊不清。一例假阳性病例是由于将假体明显变薄但完整的区域解释为骨折所致。
