3D non-linear analysis of the acetabular construct following impaction grafting

A.T.M. Phillips, P. Pankaj, C.R. Howie, Asif Sohail Usmani, A.H.R.W. Simpson

Research output: Journal article publicationJournal articleAcademic researchpeer-review

8 Citations (Scopus)

Abstract

The study investigates the short-term behaviour of the acetabular construct following revision hip arthroplasty, carried out using the Slooff-Ling impaction grafting technique; using 3D finite element analyses. An elasto-plastic material model is used to describe the constitutive behaviour of morsellised cortico-cancellous bone (MCB) graft, since it has been shown that MCB undergoes significant plastic deformation under normal physiological loads. Based on previous experimental studies carried out by the authors and others, MCB is modelled using non-linear elasticity and Drucker Prager Cap (DPC) plasticity. Loading associated with walking, sitting down, and standing up is applied to the acetabular cup through a femoral head using smooth sliding surfaces. The analyses yield distinctive patterns of migration and rotation due to different activities. These are found to be similar to those observed in the clinical setting. © 2006 Taylor & Francis Ltd.
Original languageEnglish
Pages (from-to)125-133
Number of pages9
JournalComputer Methods in Biomechanics and Biomedical Engineering
Volume9
Issue number3
DOIs
Publication statusPublished - 1 Dec 2006
Externally publishedYes

Keywords

  • Finite element
  • Hip arthroplasty
  • Impaction grafting
  • Plasticity

ASJC Scopus subject areas

  • Bioengineering
  • Biomedical Engineering
  • Human-Computer Interaction
  • Computer Science Applications

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