Details
| Original language | English |
|---|---|
| Pages (from-to) | 14-19 |
| Number of pages | 6 |
| Journal | Foot |
| Volume | 33 |
| Publication status | Published - 6 Jul 2017 |
Abstract
Background The history of total ankle arthroplasty (TAA) has different evolution steps to improve the outcome. The third generation implants show an overall 8-year survival rate up to 93%. The main reported reason for early failure of TAA is aseptic loosening, cyst formation is also frequently reported. The aim of the present study is to use the finite element (FE) method to analyze the adaptive bone remodeling processes, including cyst formation after TAA. Methods Bone characteristics applied to the model corresponded to information obtained from computed tomography. Finite element models for the tibia and the talus were developed and implant components were virtually implanted. Results The calculated total bone loss is 2% in the tibia and 17% in the talus. Cysts and areas of increased bone density were detectable dependent on prosthesis design in the tibia and talus. Conclusion Our FE simulation provides a theoretical explanation for cyst formation and increasing bone density depending on implant design. However, cysts are not mono-causal, histo-chemical reactions should also be considered. Further clinical studies are necessary to evaluate the relevance of cyst formation and therapeutic strategies.
Keywords
- Ankle, Arthroplasty, Cysts, Stress shielding
ASJC Scopus subject areas
- Health Professions(all)
- Podiatry
- Medicine(all)
- Orthopedics and Sports Medicine
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In: Foot, Vol. 33, 06.07.2017, p. 14-19.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Bone cyst formation after ankle arthroplasty may be caused by stress shielding. A numerical simulation of the strain adaptive bone remodelling
AU - Waizy, Hazibullah
AU - Behrens, Bernd Arno
AU - Radtke, Kerstin
AU - Almohallami, Amer
AU - Stukenborg-Colsman, Christina
AU - Bouguecha, Anas
PY - 2017/7/6
Y1 - 2017/7/6
N2 - Background The history of total ankle arthroplasty (TAA) has different evolution steps to improve the outcome. The third generation implants show an overall 8-year survival rate up to 93%. The main reported reason for early failure of TAA is aseptic loosening, cyst formation is also frequently reported. The aim of the present study is to use the finite element (FE) method to analyze the adaptive bone remodeling processes, including cyst formation after TAA. Methods Bone characteristics applied to the model corresponded to information obtained from computed tomography. Finite element models for the tibia and the talus were developed and implant components were virtually implanted. Results The calculated total bone loss is 2% in the tibia and 17% in the talus. Cysts and areas of increased bone density were detectable dependent on prosthesis design in the tibia and talus. Conclusion Our FE simulation provides a theoretical explanation for cyst formation and increasing bone density depending on implant design. However, cysts are not mono-causal, histo-chemical reactions should also be considered. Further clinical studies are necessary to evaluate the relevance of cyst formation and therapeutic strategies.
AB - Background The history of total ankle arthroplasty (TAA) has different evolution steps to improve the outcome. The third generation implants show an overall 8-year survival rate up to 93%. The main reported reason for early failure of TAA is aseptic loosening, cyst formation is also frequently reported. The aim of the present study is to use the finite element (FE) method to analyze the adaptive bone remodeling processes, including cyst formation after TAA. Methods Bone characteristics applied to the model corresponded to information obtained from computed tomography. Finite element models for the tibia and the talus were developed and implant components were virtually implanted. Results The calculated total bone loss is 2% in the tibia and 17% in the talus. Cysts and areas of increased bone density were detectable dependent on prosthesis design in the tibia and talus. Conclusion Our FE simulation provides a theoretical explanation for cyst formation and increasing bone density depending on implant design. However, cysts are not mono-causal, histo-chemical reactions should also be considered. Further clinical studies are necessary to evaluate the relevance of cyst formation and therapeutic strategies.
KW - Ankle
KW - Arthroplasty
KW - Cysts
KW - Stress shielding
UR - http://www.scopus.com/inward/record.url?scp=85032889875&partnerID=8YFLogxK
U2 - 10.1016/j.foot.2017.07.001
DO - 10.1016/j.foot.2017.07.001
M3 - Article
C2 - 29126036
AN - SCOPUS:85032889875
VL - 33
SP - 14
EP - 19
JO - Foot
JF - Foot
SN - 0958-2592
ER -