ANTERIOR CRUCIATE LIGAMENT TEAR - INDIRECT SIGNS AT MR-IMAGING
ANTERIOR CRUCIATE LIGAMENT TEAR - INDIRECT SIGNS AT MR-IMAGING
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DOI：
10.1148/radiology.193.3.7972834
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发表时间：
1994-12-01
期刊：
影响因子：
19.7
通讯作者：
DO, HM
中科院分区：
文献类型：
--
作者：
GENTILI, A;SEEGER, LL;DO, HM
目得：建立磁共振成像间接征象的敏感性和特异性材料和方法：89例连续患者的膝关节MR图像结果：间接征象有：（1）撕裂54例，正常35例（第一个百分比是灵敏度;第二个百分比是特异性）：胫骨外侧平台与ACL之间的角度小于45度（90%，97%）; Blumenstaat线与ACL之间的角度大于15度（89%，100%）;外侧间室骨挫伤（54%，100%）;后交叉韧带（PCL）线位置（52%，91%）; PCL角小于107度PCL弯曲率> 0.39外侧半月板后移> 3.5mm（44%，94%）;胫骨前移位> 7 mm股外侧沟深大于1.5mm者占41%，结论：由于前交叉韧带撕裂的特异性高，间接征象的出现有助于前交叉韧带撕裂的诊断。由于灵敏度较低，这些体征的缺失并不能排除ACL撕裂的诊断。
PURPOSE: To establish the sensitivity and specificity of indirect signs at magMATERIALS AND METHODS: MR images of the knees of 89 consecutive patients (54 with torn and 35 with normal ACLs) were reviewed.RESULTS: The indirect signs were as follows (first percentage is sensitivity; the second, specificity): angle between lateral tibial plateau and ACL less than 45 degrees (90%, 97%); angle between Blumenstaat line and ACL more than 15 degrees (89%, 100%); bone contusions in lateral compartment (54%, 100%); position of posterior cruciate ligament (PCL) line (52%, 91%); PCL angle less than 107 degrees (52%, 94%); PCL bowing ratio more than 0.39 (34%, 100%); posterior displacement of lateral meniscus more than 3.5 mm (44%, 94%); anterior displacement of tibia more than 7 mm (41%, 91%); and lateral femoral sulcus deeper than 1.5 mm (19%, 100%).CONCLUSION: Because the specificity is high, the presence of indirect signs corroborates the diagnosis of ACL tear. Because the sensitivity is low, the absence of these signs does not exclude the diagnosis of ACL tear.