Effect of Anterolateral Ligament Status and Inherent Knee Anatomy on Anterior Tibial Subluxation of the Lateral Compartment After Acute Anterior Cruciate Ligament Injury: A Cohort Study Based on MRI Analysis

作者：Tong Zheng, Guanyang Song, Chao Wang, Yue Li, Zhijun Zhang, Yanwei Cao, Feng Zheng, Menglinqian Di, Hui Zhang · 发表于：The American Journal of Sports Medicine · 年份：2023 · DOI：10.1177/03635465231151694 · 被引用次数：9 · 研究领域：Knee injuries and reconstruction techniques、Total Knee Arthroplasty Outcomes、Lower Extremity Biomechanics and Pathologies

Background: Anterior tibial subluxation (ATS) of the lateral compartment entails a pathological tibiofemoral alignment in knees with anterior cruciate ligament (ACL) injury. Causes of increased ATS after an acute ACL injury are not clear, but soft tissue abnormalities and bony variations of the knee are potential causes. Purpose: To determine whether increased ATS of the lateral compartment in knees with acute ACL injury is associated with (1) anterolateral ligament (ALL) status and (2) inherent anatomy of the lateral femoral condyle (LFC) and lateral tibial plateau (LTP). Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 337 patients with clinically diagnosed ACL injuries treated between September 2019 and August 2021 were retrospectively reviewed, and 119 patients with acute ACL injury were included. Of them, 79 patients with impaired ALL (ALL injury group) and 40 patients with intact ALL (ALL intact group) were identified based on magnetic resonance imaging (MRI). The ATS of the lateral compartment measured on MRI was compared between the 2 groups. The bony anatomy of knees, quantified by the LFC length, LFC height, LTP length, and LTP slope, was also evaluated on MRI and correlated with the ATS with partial correlation coefficients. Multivariate linear regression was used to identify the independent predictors of increased ATS. Results: The ATS of the lateral compartment in the ALL injury group was significantly larger than that in the ALL int...