Development of a 50th Percentile Female Femur Model

Alexander Schubert, Nico Erlinger, Christoph Leo, Johan Iraeus, Jobin John, Corina Klug*

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference paperpeer-review

Abstract

This study illustrates the development of a generic femur model representative of a 50th percentile female in terms of geometry, material data, and injury risk curve.
A female femur model consisting of 14,520 hexahedral elements was developed, calibrated, and validated. The outer shape and cortical thickness of the femur shaft were adjusted to meet a regression model reported in literature for an average 50 year old female. For the proximal femur, five computed tomography scans were morphed to the target geometry and the mean thickness of the cortical bone was calculated. Material properties
for the cortical bone were calculated from experimental data for both tension and compression loading. To validate the proximal femur mode and calibrate an injury risk curve, 15 dynamic drop-tower tests were
reproduced. For the validation of the femur shaft, 16 bending tests were simulated. The characteristics of the experimental curves were generally well captured for experiments with normal bone density. Maximum principal
strains and 99th percentile strains of the cortical bone at the time of fracture were used to develop risk curves for fractures of the proximal femur and the femur shaft, which were identified as the most relevant femoral injuries
in an accident analysis. The model as well as the post-processing scripts are openly available and can be applied or further enhanced by other researchers.
Original languageEnglish
Title of host publication2021 IRCOBI Conference Proceedings
PublisherIRCOBI, International Research Council on biomechanics on Injury
Pages308-332
Number of pages24
Publication statusPublished - 10 Sep 2021
EventInternational Research Council on the Biomechanics of Injury 2021 - Virtuell
Duration: 8 Sep 202110 Sep 2021
http://ircobi.org/wordpress/

Conference

ConferenceInternational Research Council on the Biomechanics of Injury 2021
Abbreviated titleIRCOBI
CityVirtuell
Period8/09/2110/09/21
Internet address

Keywords

  • Female
  • femur
  • human body model
  • injury risk
  • sex-specific
  • VIVA+

ASJC Scopus subject areas

  • Computational Mechanics
  • Automotive Engineering
  • Mechanical Engineering

Fields of Expertise

  • Human- & Biotechnology
  • Mobility & Production

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