Comparison of MRI and arthroscopy in classification of mediopatellar plica and grading of cartilage injury in knee / 实用医学杂志

ABSTRACT

Objective To explore the MRI features in mediopatellar plica and cartilage injury.Methods The MRI appearances of 30 patients with mediopatellar plica were divided into four types and chondral injury were divided into five grades,then the characteristics of MRI imaging were analyzed,and compared with arthroscopy classification.Results The MRI manifestations of A type (n =7) of mediopatellar plica showed a cordlike elevation on the synovial wall;B type (n =13) showed shelf-like appearance but did not cover the anterior surface of the medial femoral condyle;C type (n =8) showed shelf-like appearance and covered the anterior surface of the medial femoral condyle and D type (n =2) showed a central defect in the mediopatellar plica.The MRI manifestations of chondral injury grades included zero grade (n =10),Ⅰ grade (n =2),Ⅱ grade (n =7),Ⅲ grade (n =7) and Ⅳ grade (n=4).There was no statistical significance in terms of classification of mediopatellar plica and grading of cartilage injury via MRI and arthroscopy.Conclusion MRI provides solid evidence for preoperative assessment and choice of operation scheme for classification of mediopatellar plica and grading of cartilage injury in knee.