Discrete element analysis for characterizing the patellofemoral pressure distribution: model evaluation.

摘要: The current study was performed to evaluate the accuracy of computational assessment influence orientation patellar tendon on patellofemoral pressure distribution. Computational models were created represent eight knees previously tested at 40 deg, 60 and 80 deg flexion hamstrings loading Hamstrings increased lateral posterior tendon, with change for each test determined from experimentally measured variations in tibiofemoral alignment. cartilage femur patella represented springs. After quadriceps, total potential energy minimized determine force within tendon. forces applied by quadriceps produced translation rotation. deformation spring overlap surfaces related using linear elastic theory. iteratively adjusted until extension moment, tilt compression, acting equilibrium. For maximum ratio compression paired t-tests angle if output varied significantly (p < 0.05) between two conditions. both experimental data, multiple angles. average approximately 0.04 0.3 MPa, respectively, compared increases 0.06 0.4 MPa, respectively. modeling technique accurately characterized distribution caused altering