A comparative study on clinical signs,MRI imaging and arthroscopy of meniscal injuries in knee joint / 中国矫形外科杂志

ABSTRACT

[Objective]To compare the reliability and value of clinical signs,MRI imaging and arthroscopy in management of meniscal tears in order to increase the diagnostic rate.[Method]A retrospective study was done on 176 cases undergoing MRI examination and arthroscopic treatment,and being diagnosed as meniscal injuries in knee joint by any one of the three clinical,MRI or arthroscopic examinations.Using arthroscopic diagnosis as the standard,the sensitivity,specificity.and overall accuracy of clinical diagnosis and MRI were then calculated respectively.Significant differences between arthroscopic diagnosis and clinical diagnosis or MRI diagnosis were analyzed using statistical method of Chi-square test.[Result]The sensitivity,specificity and accuracy of clinical diagnosis were 79.3%,26.3% and 73.8% respectively.There was statistically significant difference between arthroscopic diagnosis and clinical diagnosis.The sensitivity,specificity and accuracy of MRI diagnosis were 94.1%,92.9% and 93.4% respectively.The difference between arthroscopic diagnosis and MRI diagnosis had no statistically significance and can be used as an important examination before knee arthroscopy.[Conclusion]MRI is a reliable,noninvasive diagnostic tool for meniscal tears and can be used as an important examination before knee arthros copy with MRI examination combining with the clinical signs,diagnotic rate of meniscal tears can be increased.Unnecessary arthroscopic therapy could be avoided.