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首页> 外文期刊>Orthopaedic Journal of Sports Medicine >Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament
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Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament

机译：两个有用的MRI征象评估前交叉韧带的后外侧束眼泪

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Background: Diagnosis of partial anterior cruciate ligament (ACL) tears is difficult on magnetic resonance imaging (MRI), particularly the isolated tears of the posterolateral bundle. Purpose: To describe 2 MRI signs of partial ACL tear involving the posterolateral bundle on conventional knee MRI sequences, specifically, the “gap” and “footprint” signs. Study Design: Case-control study. Methods: We retrospectively reviewed the MRI appearance of the ACL in 11 patients with arthroscopically proven partial ACL tears isolated to the posterolateral bundle, as well as in 10 patients with arthroscopically proven intact ACLs, and evaluated for the presence of gap and/or footprint signs. Results: There was high degree of sensitivity and specificity associated with the MRI findings of “gap” and “footprint” signs with arthroscopically proven isolated posterolateral bundle tears. Conclusion: Gap and footprint signs are suggestive of posterolateral bundle tear of the ACL, and the presence of 1 or both of these imaging findings should alert the radiologist to the possibility of a posterolateral bundle tear.
机译：背景：磁共振成像（MRI）难以诊断部分前交叉韧带（ACL）眼泪，尤其是后外侧束的孤立眼泪。目的：描述传统膝关节MRI序列中涉及后外侧束的2条ACL局部撕裂的MRI征兆，特别是“间隙”征象和“足迹”征象。研究设计：病例对照研究。方法：我们回顾性分析了11例经镜检证实为后外侧束的ACL撕裂患者的ACL的MRI表现，以及10例经镜检证实为完整的ACL的患者的ACL的MRI表现，并评估了是否存在间隙和/或脚印迹象。结果：MRI的“间隙”和“足迹”体征以及经关节镜检查证实的孤立的后外侧束撕裂的MRI表现具有高度的敏感性和特异性。结论：间隙和脚印征兆提示ACL的后外侧束撕裂，并且这些影像学检查结果中的1个或全部存在应提醒放射科医生注意后外侧束撕裂的可能性。

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