High Posterior Tibial Slope Influence Medial Meniscus Injuries in ACL Deficient Knees

摘要

The purpose of the current study was to evaluate the correlation between the tibial slope and medial meniscus injury in anterior cruciate ligament deficient knees. A total of 223 patients with primary ACL injury admitted to Foisor Orthopedic Hospital between 2015-2016 were included in this study. The posterior tibial slope was evaluated on a lateral x-ray view of the knee and was defined as the angle between the line joining the tibial plateau and the line perpendicular to the longitudinal axis (the proximal tibial anatomical axis). Patients were divided into two groups depending on the posterior tibial slope (9.9 and = 10), and a Chi square test was used to evaluate if there is any correlation between this and internal meniscus injuries, and Fisher's exact test was used to verify this. Overall medial meniscus lesions were found in 43.5% of the patients. The mean value of the posterior tibial slope was 11.19+/-2,685. After grouping patients in low and high group (9.9 and = 10), there were 66.8% in the high tibial slope group and 33.2% in the low group. In the high PTS group there were 93 patients with medial meniscus lesion (62.4%), and 56 (37.6%) without medial meniscus lesion. The mean posterior tibial slope was higher in the medial meniscus tear group (11.78 degrees), than mean PTS in the group without medial meniscus lesion (10.42 degrees). There was a strong correlation between high tibial slope and medial meniscus lesions (p=0.015). The main finding of the current study is that there is a statistically significant correlation between posterior tibial slope higher than 10 degrees and internal meniscus tears.