Acomparative Study Of MRI Diagnosis Of Meniscaltear Of The Knee And Diagnostic Arthroscopy

Objective: To do contrastive research between the MRI result of meniscusinjury and the result under arthroscopy and to explore the applied valueof MRI in diagnosing meniscus injury of knee joint so as to improvediagnosis efficiency and further make clear the indications of operationtreatment with arthroscopy of meniscus injury.Method: Analyze in retrospect the materials of70cases in which thepatients with injury of knee joint receive MRI and arthroscopy tests,38of whom are men while32are women. The patients range from15to65inage with an average of37.5. The analysis involves86injured knee joints,with27injured in left knee,40in right and19in both among which45medial meniscuses and41lateral meniscuses are tested. All patients havetrauma history which mainly include pain, swell, the restricted functionand twists of knee joints.MRI test: Pick3.0TMRI, coils for knee jointwhile using SE sequence eT2W---TSE (cross section), FFE sequenceeT2W---FFE (T2sagittal), eT1W---aTSE (T1sagittal), PDW---SPAIR(coronal) and other sequences to deal with imaging and get the image ofinjured meniscus. Arthroscopy test: Within one week after the MRI test,with American STRYKER bone arthroscopy, two doctors with vice-seniortitles and above conduct a regular arthroscopy test on the side knee jointsof patients，degree and scope of injury of the meniscus and whether ornot there is other ailment.I will pick out86MRI results of scanning andarthroscopy test results of knee joint meniscuses and conduct acontrastive research.Result: Under MRI test, the display of signals can be classified into three degrees: I, Ⅱ and Ⅲ.4cases display the I degree signal.4casesdisplay theⅡdegree signal.78cases display the Ⅲ degree signal.Arthroscopy test: There are2normal meniscuses; there are6degeneratedmeniscuses; there are78broken meniscuses.Make a statistical analysiswith the help of the software SPSS17.0. Test on the effectiveness of MRIand arthroscopy tests for diagnosing the broken medial and lateralmeniscuses. Meanwhile, by using X2, test and compare the differencesbetween the effects of MRI and arthroscopy tests on the value of diagnosingthe injured medial and lateral meniscuses. According to Kappa test, thesensitivity of MRI diagnosing the injured meniscuses is97.44％。Itsspecificity is75％and the accuracy is95.35％. According to Kappa test,the consistency of the MRI and arthroscopy tests on diagnosing the injuredmeniscuses is relatively good with the Kappar value as (0.726for medialmeniscuses and0.723for lateral meniscuses). The effectiveness,sensitivity, specificity and accuracy of MRI is relatively high with nodistinct differences.Conclusion:1. The consistency of the MRI and arthroscopy tests ondiagnosing the injured meniscuses is relatively good with highsensitivity and accuracy. They are safe for the patients with nopossibility of trauma and thus can be clinically treated as the firstpriority of diagnosing meniscus injury.