Influence of Trauma, Sport Activity and Body Mass Index on Knee Lesions Evaluated by Magnetic Resonance

Abstract Introduction. The aim of the study was to analyze effusion, bone edema, joint/articular cartilage, menisci and ligaments in correlation with pain intensity, sport activity and BMI. Methods. In our prospective study, 261 knee MRIs of patients with acute knee trauma were analyzed, who had a negative x-ray of the knee for fracture, and pain lasting for 1 month despite conservative therapy. Results. Gender distribution: 65.1% male and 34.87% female patients. Majority of subjects had body mass index from 18.5-24.9 (41.76%) The presence of an edema in the medial condyle of the femur was detected in 12.64% of patients. The most common lesion was lesion on the cartilage of the medial condyle on the femur (33.72%). We found lesions of the ACL in 40% of the cases. All patients with a combined trauma to the anterior cruciate ligament and the posterior horn of the medial meniscus had also a bone edema type 1 and type 2. Conclusion. Age and body weight do not have an impact on the cause of trauma and the type and grade of the knee lesions. Athletes and not athletes have signifycantly different causes of trauma to the knee. Patients with lesions in the posterior horn of the medial meniscus grade 3 had significantly more bone edemas (p=0.013). Localization of the pain is not linked to the cause of injury, but it depends on the developed lesions on the knee.