title: Stress and strain analysis of the hip joint using FEM.
abstract: Many disorders of the hip can be treated with a suitable osteotomy based on the improvement of mechanical conditions in the hip joint. These operations, such as osteotomies are very complex. The surface replacement has also been developed as an alternative to a total hip replacement for young and more active people. It is up-to-date to concern with biomechanics of pathological hips and it is necessary to supplement the existing clinical findings with the results of mechanical analyses. Several finite element (FE) models are presented in this paper. The first one offers solutions to the strain-stress analysis of the physiological hip. The second one represents dysplastic hip joint. Another two computational models of both hips of a young patient were created (FE model of physiological hip and pathological hip affected by Perthes disease with a deformed shape of the femoral head). Also a computational model is presented, which enables us to investigate strain and stress parameters in the hip joint with applied surface replacement. The strain and stress analysis was performed by means of finite element method (FEM) in ANSYS system.
authors.affiliation: Institute of Machine Design, Faculty of Mechanical Engineering, Brno University of Technology, Technická 2896/2, 616 69 Brno, Czech Republic. vaverka@fme.vutbr.cz
authors.forename: Michal
authors.initials: M
authors.lastname: Vaverka
authors.forename: Tom S
authors.initials: TS
authors.lastname: Návrat
authors.forename: Martin
authors.initials: M
authors.lastname: Vrbka
authors.forename: Zdenek
authors.initials: Z
authors.lastname: Florian
authors.forename: Vladimír
authors.initials: V
authors.lastname: Fuis
mesh_terms: D019644:Arthroplasty, Replacement, Hip; D001696:Biomechanical Phenomena; D001848:Bone Diseases, Developmental / Q000503:physiopathology* / Q000601:surgery; D003198:Computer Simulation; D020342:Finite Element Analysis; D006615:Hip / Q000502:physiology / Q000503:physiopathology* / Q000601:surgery; D025981:Hip Injuries / Q000503:physiopathology* / Q000601:surgery; D006621:Hip Joint / Q000502:physiology / Q000503:physiopathology* / Q000601:surgery; D006801:Humans; D008954:Models, Biological; D010027:Osteotomy; D013314:Stress, Mechanical