Validation of two algorithms to evaluate the interface between bone and orthopaedic implants

Debora Testi, Monica Simeoni, Cinzia Zannoni, Marco Viceconti

Research output: Contribution to journalArticle

Abstract

The level of fit and fill of the prosthetic stem in the femoral canal is an important parameter when planning a cementless total hip arthroplasty. However, the standard templates used in combination with radiographs are not always effective in the pre-operative evaluation of the level of fitting. For this reason, two algorithms were developed able to provide clinically relevant three-dimensional indicators of the implant fit and fill in the host femur, based on the CT data of each specific patient as collected in vivo. In this study the computational methods were described and validated using digital phantom datasets. Then the algorithms were applied for in vivo datasets and the sensitivity of each indicator was evaluated. The validation showed that the two algorithms are accurate from a computational point of view. Moreover, the in vivo testing demonstrated that the developed methods provide reasonable quantitative indicators of the stem positioning in the femoral CT dataset.

Original languageEnglish
Pages (from-to)143-150
Number of pages8
JournalComputer Methods and Programs in Biomedicine
Volume74
Issue number2
DOIs
Publication statusPublished - May 2004

Fingerprint

Orthopedics
Bone
Thigh
Bone and Bones
Arthroplasty
Canals
Computational methods
Prosthetics
Femur
Hip
Planning
Testing
Datasets

Keywords

  • Fit and fill
  • Hip prosthesis
  • Simulation algorithm

ASJC Scopus subject areas

  • Software

Cite this

Validation of two algorithms to evaluate the interface between bone and orthopaedic implants. / Testi, Debora; Simeoni, Monica; Zannoni, Cinzia; Viceconti, Marco.

In: Computer Methods and Programs in Biomedicine, Vol. 74, No. 2, 05.2004, p. 143-150.

Research output: Contribution to journalArticle

@article{bdb05481b99e4966ad450b88d27b01b8,
title = "Validation of two algorithms to evaluate the interface between bone and orthopaedic implants",
abstract = "The level of fit and fill of the prosthetic stem in the femoral canal is an important parameter when planning a cementless total hip arthroplasty. However, the standard templates used in combination with radiographs are not always effective in the pre-operative evaluation of the level of fitting. For this reason, two algorithms were developed able to provide clinically relevant three-dimensional indicators of the implant fit and fill in the host femur, based on the CT data of each specific patient as collected in vivo. In this study the computational methods were described and validated using digital phantom datasets. Then the algorithms were applied for in vivo datasets and the sensitivity of each indicator was evaluated. The validation showed that the two algorithms are accurate from a computational point of view. Moreover, the in vivo testing demonstrated that the developed methods provide reasonable quantitative indicators of the stem positioning in the femoral CT dataset.",
keywords = "Fit and fill, Hip prosthesis, Simulation algorithm",
author = "Debora Testi and Monica Simeoni and Cinzia Zannoni and Marco Viceconti",
year = "2004",
month = "5",
doi = "10.1016/S0169-2607(03)00078-6",
language = "English",
volume = "74",
pages = "143--150",
journal = "Computer Methods and Programs in Biomedicine",
issn = "0169-2607",
publisher = "Elsevier Ireland Ltd",
number = "2",

}

TY - JOUR

T1 - Validation of two algorithms to evaluate the interface between bone and orthopaedic implants

AU - Testi, Debora

AU - Simeoni, Monica

AU - Zannoni, Cinzia

AU - Viceconti, Marco

PY - 2004/5

Y1 - 2004/5

N2 - The level of fit and fill of the prosthetic stem in the femoral canal is an important parameter when planning a cementless total hip arthroplasty. However, the standard templates used in combination with radiographs are not always effective in the pre-operative evaluation of the level of fitting. For this reason, two algorithms were developed able to provide clinically relevant three-dimensional indicators of the implant fit and fill in the host femur, based on the CT data of each specific patient as collected in vivo. In this study the computational methods were described and validated using digital phantom datasets. Then the algorithms were applied for in vivo datasets and the sensitivity of each indicator was evaluated. The validation showed that the two algorithms are accurate from a computational point of view. Moreover, the in vivo testing demonstrated that the developed methods provide reasonable quantitative indicators of the stem positioning in the femoral CT dataset.

AB - The level of fit and fill of the prosthetic stem in the femoral canal is an important parameter when planning a cementless total hip arthroplasty. However, the standard templates used in combination with radiographs are not always effective in the pre-operative evaluation of the level of fitting. For this reason, two algorithms were developed able to provide clinically relevant three-dimensional indicators of the implant fit and fill in the host femur, based on the CT data of each specific patient as collected in vivo. In this study the computational methods were described and validated using digital phantom datasets. Then the algorithms were applied for in vivo datasets and the sensitivity of each indicator was evaluated. The validation showed that the two algorithms are accurate from a computational point of view. Moreover, the in vivo testing demonstrated that the developed methods provide reasonable quantitative indicators of the stem positioning in the femoral CT dataset.

KW - Fit and fill

KW - Hip prosthesis

KW - Simulation algorithm

UR - http://www.scopus.com/inward/record.url?scp=1542345780&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=1542345780&partnerID=8YFLogxK

U2 - 10.1016/S0169-2607(03)00078-6

DO - 10.1016/S0169-2607(03)00078-6

M3 - Article

C2 - 15013595

AN - SCOPUS:1542345780

VL - 74

SP - 143

EP - 150

JO - Computer Methods and Programs in Biomedicine

JF - Computer Methods and Programs in Biomedicine

SN - 0169-2607

IS - 2

ER -