33 research outputs found
RESPONSE ANALYSIS OF THE KNEE JOINT IN FLEXION UNDER QUADRCEPS ACTIVATION
The human knee joint is a complex structure with interactions between muscle forces, ligaments, menisci and articulations at different regions. Proper management of rehabilitation and treatment programs requires a solid understanding of such interactions in intact and injured conditions. Towards this goal, a realistic nonlinear 3-D finite element model of the entire knee joint is developed. In this work, the ligament forces and contact stresses/areas are computed as the unconstrained joint is flexed from 0° to 90° ± a constant 137 N quadriceps force. Predictions support the coupling between various components as a function of quadriceps exertion and flexion angle. The model is promising in augmenting our understanding of the joint function leading to improved design for rehabilitation programs and replacement procedures in active patients
Knee joint mechanics under quadriceps-hamstrings muscle forces are influenced by tibial restraint
Biomechanics of changes in ACL and PCL material properties or prestrains in flexion under muscle force-implications in ligament reconstruction.
Effect of Tibial Tubercle Elevation on Biomechanics of the Entire Knee Joint Under Muscle Loads
Knee joint biomechanics in open-kinetic-chain flexion exercises
Background. Different rehabilitation exercises such as open-kinetic-chain flexion and extension exercises are currently employed in non-operative and post-operative managements of joint disorders. The challenge is to strengthen the muscles and to restore the near-normal function of the joint while protecting its components (e.g., the reconstructed ligament) from excessive stresses