Emshoff Rüdiger, Brandlmaier Iris, Bodner Gerd, Rudisch Ansgar
University of Innsbruck, Innsbruck, Austria.
J Oral Maxillofac Surg. 2003 Aug;61(8):877-81. doi: 10.1016/s0278-2391(03)00247-7.
Our goal was to determine the feasibility of high-resolution sonography for the detection of condylar erosion and associated disc displacement at the temporomandibular joint (TMJ) condyle.
Forty-eight consecutive patients (96 joints) with TMJ disorders were investigated prospectively using a 12.5-MHz array transducer. Images were assessed for condylar erosion and disc displacements. Sonographic findings were correlated with those of magnetic resonance imaging (MRI).
At MRI, 18 osseous changes were diagnosed with condylar erosion. Sonographically, 15 of the 18 condylar erosions were diagnosed correctly. Sensitivity, specificity, and accuracy of sonography in the depiction of condylar erosion were 83%, 63%, and 67%, respectively. The positive predictive value was 34%, and the negative predictive value was 94%. Disc displacement without reduction (43 of 96) and disc displacement without reduction concomitant with condylar erosion (16 of 96) were detected with an accuracy of 93% and 80%.
Sonography is an insufficient imaging technique for the detection of condylar erosion. Assessment of disc displacement without reduction may be reliably made with sonography.
我们的目标是确定高分辨率超声检查用于检测颞下颌关节（TMJ）髁突侵蚀及相关盘移位的可行性。
对48例连续的颞下颌关节紊乱患者（96个关节）前瞻性地使用12.5MHz线阵探头进行检查。评估图像以确定髁突侵蚀和盘移位情况。超声检查结果与磁共振成像（MRI）结果进行对照。
在MRI检查中，诊断出18例伴有髁突侵蚀的骨质改变。超声检查正确诊断出了18例髁突侵蚀中的15例。超声检查在显示髁突侵蚀方面的敏感性、特异性和准确性分别为83%、63%和67%。阳性预测值为34%，阴性预测值为94%。超声检查对不可复性盘移位（96例中的43例）和伴有髁突侵蚀的不可复性盘移位（96例中的16例）的检测准确率分别为93%和80%。
超声检查在检测髁突侵蚀方面是一种不足的成像技术。超声检查可可靠地评估不可复性盘移位。
