Characterization of bone-implant fixation using modal analysis: application to a press-fit implant model.

ABSTRACT: Orthopaedic implant fixation is strongly dependant upon the effective mechanical properties of newly formed tissue. In this study, we evaluated the potential of modal analysis to derive viscoelastic properties of periprosthetic tissue. We hypothesized that Young's modulus and loss factor could be obtained by a combined theoretical, computational and experimental modal analysis approach. This procedure was applied to ex vivo specimens from a cylindrical experimental implant placed in cancellous bone in an unloaded press-fit configuration, obtained after a four week observation period. Four sections each from seven textured titanium implants were investigated. The first resonant frequency and loss factor were measured. Average experimentally determined loss factor was 2% (SD 0.4%) and averag

SUBMITTER: Swider P 

PROVIDER: S-EPMC3716370 | biostudies-literature | 2009 Aug

REPOSITORIES: biostudies-literature