A Study of the Accompanying Lesions of the Knee Joint in the MRI of the Patients with Torn Anterior Cruciate Ligament

Anterior cruciate ligamant (ACL) injuries are the most common sport injuries of the knee joint. These injuries are commonly associated with other intraarticular lesions. The purpose of this study was to search for other intraarticular lesions in the MRI of the patients with torn ACL. Subjects and Between April, 2012 until March, 2013, 150 MRIs token from patients with torn ACL were collected and reported by another radiologist and the number of intraarticular structure injuries were reviewed. The most common lesion was joint effusion (80%). Other lesions were medial meniscus tearing (74%), lateral meniscus (23%), PCL buckling (8%), Tibial articular surface fracture (6%), Femoral articular surface fracture (4.8%), soft tissue edema (9%), Lateral collateral ligament injury (22%). There was 12% difference between two reports. Results of this study suggest that ACL injuries are associated with other knee pathologies and there are 12% inter-observer variation in interpreting MRI scans of these patients.