前交叉韧带前内侧束或后外侧束损伤的MRI 3D—MEDIC表现  

MRI 3D-MEDIC features of anteromedial bundle or posterolateral bundle tears of the anterior cruciate ligament of the knee

作　　者：陈新[1] 潘晶晶[1] 王丛颖[1] 牛琰鑫[1] 

机构地区：[1]第二炮兵总医院医学影像科,北京100088

出　　处：《实用放射学杂志》2011年第9期1390-1392,共3页Journal of Practical Radiology

摘　　要：目的 探讨前交叉韧带（anterior cruciate ligament,ACL）前内侧束（anteromedial bundle,AMB）或后外侧束（posterolateral bundle,PLB）撕裂的MRI表现.方法 本组41例,经膝关节镜或手术证实为ACL部分撕裂,其中AMB撕裂22例,PLB撕裂19例,使用MRI多回波数据组合（multipleecho data image combination sequence,MEDIC）三维梯度回波序列扫描,经斜矢状,横轴和斜冠状面图像重建,观察AMB或PLB撕裂后的MRI表现.结果 19例PLB撕裂和22例AMB撕裂,在MRI斜冠状位层面上显示ACL正常的＂人＂字形结构被破坏及在横轴层面显示正常的倒＂V＂字形结构被破坏;10例PLB撕裂表现为外侧束或外侧臂消失呈单束或单臂征;10例AMB撕裂表现为内侧束或内侧臂消失亦呈单束或单臂征.结论 MRI 3DMEDIC 三维梯度回波序列扫描可显示AMB或PLB撕裂.Objective To research MR imaging findings of anteromedial bundle（AMB） and posterolateral bundle（PLB） tears of anterior cruciate ligament （ACL） of the knee. Methods 41 cases of partial ACL tears including 22 cases of AMB tears and 19 cases of PLB tears confirmed by arthroscopy or surgery underwent MRI 3-dimensional multi echo data imaging combination（ MRI 3D- MEDIC） examination and MR imaging findings of AMB tears and PLB tears were observed on oblique coronal ,sagital images and axial images of multiplain reconstruction . Results It was high specificity signs of AMB tear or PLB tear that the normal architecture of the＂.A.＇type of ACL on oblique coronal images and reverse＂V＂ type of ACL on axial images were broken showed by MRI, and PLB tear in 10 cases manifestated a lateral bundle disappear as a sign of single bundle and AMB tear in 10 cases manifestated a medial bundle disappear also as a sign of single bundle. Conclusion It is feasible to make MRI 3D-MEDIC to diagnose AMB or PLB tears of the anterior cruciate ligament.

关 键 词：膝关节 前交叉韧带 撕裂 磁共振成像 

分 类 号：R686[医药卫生—骨科学] R445.2[医药卫生—外科学]