Sagittal profile of the femoral condyles and its application to femorotibial contact analysis.
Measurements of the sagittal profiles of the articular surfaces of 24 femoral condyles were performed using a laser range finder. An algebraic algorithm was developed to reconstruct the measured sagittal profiles with simple geometry. In particular, it has been shown that a two-circular-arc model provides a very accurate reconstruction of the actual profiles in the femorotibial contact region. The average sagittal profile was used for a femorotibial contact analysis of TKA implants. The contact analysis was performed by using a rigid-body-spring model extended to the case of nonlinear force-deformation behavior of the tibial polyethylene component.
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Department of Mechanical Engineering, McGill University, Montréal, Québec, Canada.
Ahmed
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D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000465:Algorithms; D004548:Elasticity; D005260:Female; D005269:Femur / Q000033:anatomy & histology* / Q000502:physiology; D006801:Humans; D066298:In Vitro Techniques; D007719:Knee Joint / Q000033:anatomy & histology* / Q000502:physiology*; D008297:Male; D008875:Middle Aged; D008954:Models, Biological; D017711:Nonlinear Dynamics; D013314:Stress, Mechanical; D013499:Surface Properties; D013977:Tibia / Q000033:anatomy & histology / Q000502:physiology; D016474:Weight-Bearing / Q000502:physiology