Effects of Appliation of low-field MRI in diagnosis of acute ligament injury at knee joint

Abstract

Objective This prospective study was designed to evaluate the sensitivity and accuracy of the magnetic resonance imaging (MRI) findings of acute ligament injury at knee joint. Methods 186 patients who underwent the MRI examination and surgery due to acute injury at knee joint during June 2007 to June 2009 in our hospital were involved in this retrospective study. We analyzed the MRI and surgical findings from above patients. Results of 186 cases of patients with MRI examination, there are 169 cases of patients with lateral collateral ligament injury patients (90.7%) and 119 cases of patients with cruciate ligament injuries (64.0%).The sensitivity which was confirmed by surgical exploration was 100%. The consistent rates of MRI with surgery in diagnosis of severity of lateral collateral ligament and posterior cruciate ligament were 93.8% and 94.1% respectively. Conclusion Using low-field MRI examination in knee examination can accurately diagnose the collateral ligament injury and cruciate ligament injury. It can accurately diagnose the severity of these injury and provide reliable evidences for clinical treatment. Key words: Knee joint; Ligament injury; Low-field magnetic resonance imaging