Load Bearing Simulation of Knee Ligament Fiber Bundles Attachment States

Abstract

In this study, we developed a knee simulation model considering the attachment area of the knee joint cruciate ligament bundles. 3D geometry extraction of the femur, tibia, anterior cruciate ligament (ACL), posterior cruciate ligament (PCL), medial collateral ligament (MCL), and lateral collateral ligament (LCL) from CT images of the knee joint. In addition, the stress-strain curves of ligaments were derived from uniaxial tensile tests. A finite element analysis model of the knee joint was created based on the above conditions. The state of ligament bundle attachment was reproduced by dividing the attachment area of the ACL and PCL to the femur and tibia. As a result, although the behavior of the ligament during compression remained to be an issue, similar tendencies to those of ligament desmotomy studies were obtained.