title: [Finite element analysis, its limitations and the relevance of its results to orthopaedic surgery as shown by simultaneous experimental measurements (author's transl)].
abstract: For a stress analysis of the femur, intact or with an implant, the Finite Element Method appears to be the only practicable one. In order to evaluate the limitation of this method and the relevance of its results for orthopaedic problems, bones were modelled for 2-dimensional and 3-dimensional analysis. Strain gauges were attached to the actual bones. Strains were calculated and measured exerimentally. The results led to these conclusions: The Finite Element Method alone is an appropriate means for qualitative and comparative studies. Complicated geometry of bones and uncertainties about their mechanical properties make it mandatory that calculated values by corroborated by experimental measurements at least in certain points. This ought to be considered particularly if practical consequences are to be drawn from Finite Element calculations in orthopaedic surgery.
mesh_terms: D004853:Epoxy Resins; D005269:Femur / Q000033:anatomy & histology*; D006622:Hip Prosthesis; D006801:Humans; D008433:Mathematics; D008953:Models, Anatomic; D008954:Models, Biological; D008961:Models, Structural; D011108:Polymers; D013314:Stress, Mechanical
chemical_list: D004853:Epoxy Resins; D011108:Polymers; C027001:araldite B
vernacular_title: Aussagewert und Grenzen der Spannungsberechnung mit der Finiten-Element-Methode (FEM) bei orthopädischen Problemen.