Effects of material properties of femoral hip components on bone remodeling

Harrie Weinans, Rik Huiskes, H.J. Grootenboer

Research output: Contribution to journalArticleAcademic

143 Citations (Scopus)
61 Downloads (Pure)

Abstract

Bone loss around femoral hip stems is one of the problems threatening the long-term fixation of uncemented stems. Many believe that this phenomenon is caused by reduced stresses in the bone (stress shielding). In the present study the mechanical consequences of different femoral stem materials were investigated using adaptive bone remodeling theory in combination with the finite element method. Bone-remodeling in the femur around the implant and interface stresses between bone and implant were investigated for fully bonded femoral stems. Cemented stems (cobalt-chrome or titanium alloy) caused less bone resorption and lower interface stresses than uncemented stems made from the same materials. The range of the bone resorption predicted in the simulation models was from 23% in the proximal medial cortex surrounding the cemented titanium alloy stem to 76% in the proximal medial cortex around the uncemented cobalt-chrome stem. Very little bone resorption was predicted around a flexible, uncemented iso-elastic stem, but the proximal interface stresses increased drastically relative to the stiffer uncemented stems composed of cobalt-chrome or titanium alloy. However, the proximal interface stress peak was reduced and shifted during the adaptive remodeling process. The latter was found particularly in the stiffer uncemented cobalt-chrome-molybdenum implant and less for the flexible isoelastic implant.
Original languageUndefined
Pages (from-to)846-853
JournalJournal of orthopaedic research
Volume10
Issue number6
DOIs
Publication statusPublished - 1992

Keywords

  • Bone remodeling
  • Total Hip Replacement
  • Bone resorption
  • Stress analysis
  • Stress shielding
  • IR-70964

Cite this

Weinans, Harrie ; Huiskes, Rik ; Grootenboer, H.J. / Effects of material properties of femoral hip components on bone remodeling. In: Journal of orthopaedic research. 1992 ; Vol. 10, No. 6. pp. 846-853.
@article{0ee1cb4d84674315ad3123d9890ae3ef,
title = "Effects of material properties of femoral hip components on bone remodeling",
abstract = "Bone loss around femoral hip stems is one of the problems threatening the long-term fixation of uncemented stems. Many believe that this phenomenon is caused by reduced stresses in the bone (stress shielding). In the present study the mechanical consequences of different femoral stem materials were investigated using adaptive bone remodeling theory in combination with the finite element method. Bone-remodeling in the femur around the implant and interface stresses between bone and implant were investigated for fully bonded femoral stems. Cemented stems (cobalt-chrome or titanium alloy) caused less bone resorption and lower interface stresses than uncemented stems made from the same materials. The range of the bone resorption predicted in the simulation models was from 23{\%} in the proximal medial cortex surrounding the cemented titanium alloy stem to 76{\%} in the proximal medial cortex around the uncemented cobalt-chrome stem. Very little bone resorption was predicted around a flexible, uncemented iso-elastic stem, but the proximal interface stresses increased drastically relative to the stiffer uncemented stems composed of cobalt-chrome or titanium alloy. However, the proximal interface stress peak was reduced and shifted during the adaptive remodeling process. The latter was found particularly in the stiffer uncemented cobalt-chrome-molybdenum implant and less for the flexible isoelastic implant.",
keywords = "Bone remodeling, Total Hip Replacement, Bone resorption, Stress analysis, Stress shielding, IR-70964",
author = "Harrie Weinans and Rik Huiskes and H.J. Grootenboer",
year = "1992",
doi = "10.1002/jor.1100100614",
language = "Undefined",
volume = "10",
pages = "846--853",
journal = "Journal of orthopaedic research",
issn = "0736-0266",
publisher = "Wiley-Blackwell",
number = "6",

}

Effects of material properties of femoral hip components on bone remodeling. / Weinans, Harrie; Huiskes, Rik; Grootenboer, H.J.

In: Journal of orthopaedic research, Vol. 10, No. 6, 1992, p. 846-853.

Research output: Contribution to journalArticleAcademic

TY - JOUR

T1 - Effects of material properties of femoral hip components on bone remodeling

AU - Weinans, Harrie

AU - Huiskes, Rik

AU - Grootenboer, H.J.

PY - 1992

Y1 - 1992

N2 - Bone loss around femoral hip stems is one of the problems threatening the long-term fixation of uncemented stems. Many believe that this phenomenon is caused by reduced stresses in the bone (stress shielding). In the present study the mechanical consequences of different femoral stem materials were investigated using adaptive bone remodeling theory in combination with the finite element method. Bone-remodeling in the femur around the implant and interface stresses between bone and implant were investigated for fully bonded femoral stems. Cemented stems (cobalt-chrome or titanium alloy) caused less bone resorption and lower interface stresses than uncemented stems made from the same materials. The range of the bone resorption predicted in the simulation models was from 23% in the proximal medial cortex surrounding the cemented titanium alloy stem to 76% in the proximal medial cortex around the uncemented cobalt-chrome stem. Very little bone resorption was predicted around a flexible, uncemented iso-elastic stem, but the proximal interface stresses increased drastically relative to the stiffer uncemented stems composed of cobalt-chrome or titanium alloy. However, the proximal interface stress peak was reduced and shifted during the adaptive remodeling process. The latter was found particularly in the stiffer uncemented cobalt-chrome-molybdenum implant and less for the flexible isoelastic implant.

AB - Bone loss around femoral hip stems is one of the problems threatening the long-term fixation of uncemented stems. Many believe that this phenomenon is caused by reduced stresses in the bone (stress shielding). In the present study the mechanical consequences of different femoral stem materials were investigated using adaptive bone remodeling theory in combination with the finite element method. Bone-remodeling in the femur around the implant and interface stresses between bone and implant were investigated for fully bonded femoral stems. Cemented stems (cobalt-chrome or titanium alloy) caused less bone resorption and lower interface stresses than uncemented stems made from the same materials. The range of the bone resorption predicted in the simulation models was from 23% in the proximal medial cortex surrounding the cemented titanium alloy stem to 76% in the proximal medial cortex around the uncemented cobalt-chrome stem. Very little bone resorption was predicted around a flexible, uncemented iso-elastic stem, but the proximal interface stresses increased drastically relative to the stiffer uncemented stems composed of cobalt-chrome or titanium alloy. However, the proximal interface stress peak was reduced and shifted during the adaptive remodeling process. The latter was found particularly in the stiffer uncemented cobalt-chrome-molybdenum implant and less for the flexible isoelastic implant.

KW - Bone remodeling

KW - Total Hip Replacement

KW - Bone resorption

KW - Stress analysis

KW - Stress shielding

KW - IR-70964

U2 - 10.1002/jor.1100100614

DO - 10.1002/jor.1100100614

M3 - Article

VL - 10

SP - 846

EP - 853

JO - Journal of orthopaedic research

JF - Journal of orthopaedic research

SN - 0736-0266

IS - 6

ER -