Static Anterior Tibial Translation after Anterior Cruciate Ligament Injury: Incidence and Clinical Characteristics / 中国运动医学杂志

Objective To explore the incidence and clinical characteristics of the anterior tibial translation(ATT) after anterior cruciate ligament injury.Methods One hundred and fifty-three patients with the anterior cruciate ligament injury underwent standard magnetic resonance imaging scans with full knee extension.Based on the relative location between the lateral tibial plateau and the lateral femoral condyle,all the patients were divided into an ATT positive group and an ATT negative group.Moreover,the posterior tibial slope angle(PTSA),the continuity of anterolateral ligament(ALL),and the integrity of posterior horn of the lateral meniscus of all the patients were detected so as to find the risking factors for ATT.Results Among the 153 patients,46 patients were finally confirmed to have ATT.Moreover,the average PTSA of the ATT positive group was significantly larger than that of the ATT negative group.However,there were no significant differences between the two groups in the continuity of ALL and the integrity of posterior horn of lateral meniscus.Conclusion In this study,the incidence of ATT was 30.1％,which may be correlated to the increased PTSA.

THE EFFECT OF DIRECT KICKING FORCE ON ANTERIOR TIBIAL TRANSLATION FROM SOCCER BALL IN HEALTHY KNEES / 体力科学

Anterior cruciate ligament (ACL) is the first restraint against anterior tibial translation (ATT) in the knee joint. Previous studies suggested that knee joint laxity might be increased by the repeated stress imposed on the knee joint. The purpose of this study was to demonstrate the effect of the repeated soccer ball kicking actions on the ATT in healthy knees. Forty female collegiate students volunteered for this study. KT-2000 knee arthrometer was used to measure ATT before and after the task. The findings demonstrated that the repeated kicking actions had no significant effect on the ATT in healthy knees. The maximum knee extension angle on the striking side was greater than the supporting side (p<0.05). Significant correlations between mean anterior translation and maximum knee extension angle were observed on both sides (p<0.05). The kicking force on a soccer ball resulted in no increase in the knee laxity.