title: Contact stresses in a patient-specific unicompartmental knee replacement.
abstract: A custom, patient-specific unicompartmental knee replacement was developed using a unsupervised neural network trained on a database of healthy knee geometries. This custom implant was then compared to a conventional implant in terms of contact stress in a Finite Element Model. The custom implant experienced lower contact stresses at the tibiofemoral joint compared to the conventional implant. The custom implant stresses were further reduced with the use of a customized mobile bearing. The custom implant also displayed more uniform stress distribution at the bone-implant interface.
authors.affiliation: Department of Mechanical and Mechatronic Engineering, Stellenbosch University, South Africa. dawie@sun.ac.za
authors.forename: David J
authors.initials: DJ
authors.lastname: Van Den Heever
authors.forename: Cornie
authors.initials: C
authors.lastname: Scheffer
authors.forename: Pieter J
authors.initials: PJ
authors.lastname: Erasmus
authors.forename: Edwin M
authors.initials: EM
authors.lastname: Dillon
mesh_terms: D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D020342:Finite Element Analysis; D006801:Humans; D007719:Knee Joint / Q000033:anatomy & histology; D007720:Knee Prosthesis; D008875:Middle Aged; D011474:Prosthesis Design / Q000379:methods*; D016059:Range of Motion, Articular / Q000502:physiology; D013314:Stress, Mechanical