Numerical investigations on the strain-adaptive bone remodelling in the periprosthetic femur: Influence of the boundary conditions

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dc.identifier.uri http://dx.doi.org/10.15488/468
dc.identifier.uri http://www.repo.uni-hannover.de/handle/123456789/491
dc.contributor.author Behrens, Bernd-Arno
dc.contributor.author Nolte, Ingo
dc.contributor.author Wefstaedt, Patrick
dc.contributor.author Stukenborg-Colsman, Christina
dc.contributor.author Bouguecha, Anas
dc.date.accessioned 2016-08-30T10:20:26Z
dc.date.available 2016-08-30T10:20:26Z
dc.date.issued 2009-04-16
dc.identifier.citation Behrens, Bernd-Arno; Nolte, Ingo; Wefstaedt, Patrick; Stukenborg-Colsman, Christina; Bouguecha, Anas: Numerical investigations on the strain-adaptive bone remodelling in the periprosthetic femur: Influence of the boundary conditions. In: Biomedical Engineering Online 8 (2009), 7. DOI: http://dx.doi.org/10.1186/1475-925X-8-7
dc.description.abstract Background: There are several numerical investigations on bone remodelling after total hip arthroplasty (THA) on the basis of the finite element analysis (FEA). For such computations certain boundary conditions have to be defined. The authors chose a maximum of three static load situations, usually taken from the gait cycle because this is the most frequent dynamic activity of a patient after THA. Materials and methods: The numerical study presented here investigates whether it is useful to consider only one static load situation of the gait cycle in the FE calculation of the bone remodelling. For this purpose, 5 different loading cases were examined in order to determine their influence on the change in the physiological load distribution within the femur and on the resulting strain-adaptive bone remodelling. First, four different static loading cases at 25%, 45%, 65% and 85% of the gait cycle, respectively, and then the whole gait cycle in a loading regime were examined in order to regard all the different loadings of the cycle in the simulation. Results: The computed evolution of the apparent bone density (ABD) and the calculated mass losses in the periprosthetic femur show that the simulation results are highly dependent on the chosen boundary conditions. Conclusion: These numerical investigations prove that a static load situation is insufficient for representing the whole gait cycle. This causes severe deviations in the FE calculation of the bone remodelling. However, accompanying clinical examinations are necessary to calibrate the bone adaptation law and thus to validate the FE calculations. eng
dc.description.sponsorship DFG/CRC/599
dc.language.iso eng
dc.publisher London : Biomed Central Ltd
dc.relation.ispartofseries Biomedical Engineering Online 8 (2009)
dc.rights CC BY 2.0
dc.rights.uri https://creativecommons.org/licenses/by/2.0/
dc.subject hip prostheses eng
dc.subject density eng
dc.subject forces eng
dc.subject stems eng
dc.subject.ddc 620 | Ingenieurwissenschaften und Maschinenbau ger
dc.title Numerical investigations on the strain-adaptive bone remodelling in the periprosthetic femur: Influence of the boundary conditions
dc.type article
dc.type Text
dc.relation.issn 1475-925X
dc.relation.doi http://dx.doi.org/10.1186/1475-925X-8-7
dc.bibliographicCitation.volume 8
dc.bibliographicCitation.firstPage 7
dc.description.version publishedVersion
tib.accessRights frei zug�nglich


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