Abstract
Objective To investigate the factors associated with meniscus and cartilage lesions following rupture of anterior cruciate ligament(ACL).Methods Two hundred ninety-three consecutive young patients arthroscopically diagnosed with rupture of ACL were treated from January 2007 to December 2011 in our department.There were 228 men and 65 women,aged from 18 to 40 years (average,28.6 years).The chi-square test was used to determine the risk factors associated with meniscus and cartilage lesions,with gender,injury mechanism,injury course,post-injury activity level,instability re-injury and body mass index (BMI) as independent variables and meniscus lesion location,cartilage lesion severity and incidences as dependent variables.Multifactor Logistic Regression was used to analyze independent risk factors,corresponding odds ratio (OR) and 95％ confidence interval(CI).Results Injury course and instability re-injury were found to be the risk factors associated with meniscal injury(P ＜ 0.05).Gender,injury mechanism,injury course,post-injury activity level,and instability re-injury were found to be the risk factors associated with chondral injury (P ＜ 0.05).The independent risk factor associated with location of meniscal injury was instability re-injury [OR =9.875,95％ CI (5.444,17.911),P ＜ 0.05].The independent risk factors associated with incidence and severity of chondral injury were injury mechanism [OR =2.441,95％ CI (1.224,4.869),P ＜0.005],injury course [OR=1.302,95％ CI (1.031,1.644),P=0.027],instability re-injury [OR =4.201,95％ CI (1.993,8.854),P ＜ 0.05].The incidence of instability re-injury increased with extended injury course.Conclusions Because severe meniscal and cartilage injuries can be induced by ACL rupture,medical treatment should be performed as soon as possible after the rupture to decrease the incidence of instability re-injury,especially for patients with high energy contact injury and those who desire a high post-injury activity level. Key words: Anterior cruciate ligament; Menisci; Cartilage; Knee injuries
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