Finite element analysis to characterize how varying patellar loading influences pressure applied to cartilage: model evaluation

摘要: A finite element analysis (FEA) modeling technique has been developed to characterize how varying the orientation of patellar tendon influences patellofemoral pressure distribution. To evaluate accuracy technique, models were created from MRI images represent five knees that previously tested in vitro determine influence hamstrings loading on contact pressures. Hamstrings increased lateral and posterior tendon. Each model was loaded at 40°, 60°, 80° flexion with quadriceps force vectors representing experimental conditions. The represented for unloaded conditions based measures tibiofemoral alignment. Similar data, simulated within FEA shifted center laterally maximum pressure. Significant (p < 0.05) differences identified paired t-tests carried out individual angles. ability replicate trends indicates can be used future studies focused determining variations related anatomical or surgical procedures