title: Finite element analysis as a tool for parametric prosthetic foot design and evaluation. Technique development in the solid ankle cushioned heel (SACH) foot.
abstract: In this study, we developed an approach for prosthetic foot design incorporating motion analysis, mechanical testing and computer analysis. Using computer modeling and finite element analysis, a three-dimensional (3D), numerical foot model of the solid ankle cushioned heel (SACH) foot was constructed and analyzed based upon loading conditions obtained from the gait analysis of an amputee and validated experimentally using mechanical testing. The model was then used to address effects of viscoelastic heel performance numerically. This is just one example of the type of parametric analysis and design enabled by this approach. More importantly, by incorporating the unique gait characteristics of the amputee, these parametric analyses may lead to prosthetic feet more appropriately representing a particular user's needs, comfort and activity level.
authors.affiliation: Department of Orthopaedics and Rehabilitation, The Milton S. Hershey Medical Center, Hershey, PA 17033, USA. msaunder@mrl.hmc.psu.edu
authors.forename: Marnie M
authors.initials: MM
authors.lastname: Saunders
authors.forename: Edwards P
authors.initials: EP
authors.lastname: Schwentker
authors.forename: David B
authors.initials: DB
authors.lastname: Kay
authors.forename: Gordon
authors.initials: G
authors.lastname: Bennett
authors.forename: Christopher R
authors.initials: CR
authors.lastname: Jacobs
authors.forename: Mary C
authors.initials: MC
authors.lastname: Verstraete
authors.forename: Glen O
authors.initials: GO
authors.lastname: Njus
mesh_terms: D000671:Amputation, Surgical / Q000534:rehabilitation*; D001186:Artificial Limbs; D003198:Computer Simulation; D004548:Elasticity; D019544:Equipment Failure Analysis / Q000379:methods; D020342:Finite Element Analysis; D005528:Foot / Q000503:physiopathology* / Q000601:surgery; D005684:Gait; D006365:Heel / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D008297:Male; D008422:Materials Testing / Q000379:methods; D008875:Middle Aged; D008954:Models, Biological; D011474:Prosthesis Design / Q000379:methods; D011786:Quality Control; D013314:Stress, Mechanical; D014783:Viscosity; D016474:Weight-Bearing