Biomechanical characteristics of ligament injuries in the knee joint during impact in the upright position: a finite element analysis

作者：Jia Li, Hanbing Liu, Mingyao Song, Fei Lin, Ziya Zhao, Zhenghui Wang, Liming Hou, Guoan Zhao, Wu Ren · 发表于：Journal of Orthopaedic Surgery and Research · 年份：2024 · DOI：10.1186/s13018-024-05064-5 · 被引用次数：6 · 研究领域：Knee injuries and reconstruction techniques、Lower Extremity Biomechanics and Pathologies、Adhesion, Friction, and Surface Interactions

BACKGROUND: Our study aims to examine stress-strain data of the four major knee ligaments-the anterior cruciate ligament (ACL), the posterior cruciate ligament (PCL), the medial collateral ligament (MCL), and the lateral collateral ligament (LCL)-under transient impacts in various knee joint regions and directions within the static standing position of the human body. Subsequently, we will analyze the varying biomechanical properties of knee ligaments under distinct loading conditions. METHODS: A 3D simulation model of the human knee joint including bone, meniscus, articular cartilage, ligaments, and other tissues, was reconstructed from MRI images. A vertical load of 300 N was applied to the femur model's top surface to mimic the static standing position, and a 134 N load was applied to the impacted area of the knee joint. Nine scenarios were created to examine the effects of anterior, posterior, and lateral external forces on the upper, middle, and lower regions of the knee joint. RESULTS: The PCL exhibited the highest stress levels among the four ligaments when anterior loads were applied to the upper, middle, and lower parts of the knee, with maximum stresses at the PCL-fibula junction measuring 59.895 MPa, 27.481 MPa, and 28.607 MPa, respectively. Highest stresses on the PCL were observed under posterior loads on the upper, middle, and lower knee areas, with peak stresses of 57.421 MPa, 38.147 MPa, and 26.904 MPa, focusing notably on the PCL-tibia junction. When a latera...