MRI diagnosis of the meniscus and ligament injury of the knee joint
- VernacularTitle:膝关节半月板和韧带损伤磁共振成像诊断
- Author:
Shaolin LI
;
Xuelin ZHANG
;
Gang WANG
- Publication Type:Journal Article
- Keywords:
Meniscus injury;
Ligament injury;
Magnetic resonance imaging(MRI);
Diagnosis
- From:
Chinese Journal of Orthopaedic Trauma
2002;0(04):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To evaluate the clinical significance and value of MRI for the diagnosis of the meniscus and ligament injury of the knee joint. Methods 27 patients were put under MRI examinations with 1.5 T unit(Magnetom Vision plus, SIEMENS)and confirmed by surgery or arthroscopy. In all patients, the sagittal and coronal multiplane scan was performed with 4mm section thickness. The posterior cruciate ligament (PCL) angle and PCL curvature index were measured in 8 patients with anterior cruciate ligament (ACL) tears and in 22 patients with ACL normal. The results of measuring were statistically analyzed. Results The accurate diagnosis of MRI was 18 of 24 patients (62.07%) and 24 of 31 cases with meniscus injury (77.42%). On MRI, the signs of meniscus injury were as follows: firstly, the linear high signal intensity inside meniscus was abnormal. Secondly, the size of meniscus diminished and the inner edge was pointless. The third, the triangle configuration of meniscus disappeared.The fourth, the lower or superior margin of meniscus appeared as wavelike configuration. The fifth,the distance from outer side of meniscus to articular capsule increased. Only 5 in 9 patients with ACL tears were exactly diagnosed and the accuracy ratio was 55.56%. There were remarkable statistical differences between the ACL tears group and ACL normal group in the results of (PCL) angle and PCL curvature index(P
