Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 02, 2019 - November 04, 2019
The anterior cruciate ligament (ACL) prevents the tibia from moving forward toward the femur and the torsion of the knee. From an anatomical perspective, ACL composed of Antero-Medial (AM) and Postero-Lateral (PL) bundles. Therefore, ACL surgery is currently performed in two ways: single-bundle and double-bundle reconstruction. However, both methods have the problem of being damaged immediately after surgery. Therefore, it is important to elucidate the mechanical properties of the fiber bundles that make up the ACL. In this study, as part of elucidating the mechanical properties of ACL, we investigated the tensile speed dependence. In order to evaluate the anterior tibial braking performance of ACL, we applied a load to the front of the tibia at different angles and measured the amount of anterior movement of the tibia using the developed 6 degree-freedom testing machine. As a result, it was found that the greater the knee joint angle, the smaller the forward movement of the tibia. In addition, in order to evaluate the load speed dependency, the load was applied to the front of the tibia at the speeds of 1.0 mm / s, 0.1 mm / s, and 0.01 mm / s, and the amount of forward movement of the tibia was measured. As a result, it was found that the amount of forward tibial movement decreased as the loading speed increased.
