A large number of parameters such as material properties, geometry, and structural strength are involved in the design and analysis of cemented hip implants. Uncertainties in these parameters have a potential to compromise the structural performance and lifetime of implants. Statistical analyses are well suited to investigating this type of problem as they can estimate the influence of these uncertainties on the incidence of failure. Recent investigations have focused on the effect of uncertainty in cement properties and loading condition on the integrity of the construct. The present study hypothesizes that geometrical uncertainties will play a role in cement mantle failure. Finite element input parameters were simulated as random variables and different modes of failure were investigated using a response surface method (RSM). The magnitude of random von Mises stresses varied up to 8 MPa, compared with a maximum nominal value of 2.38 MPa. Results obtained using RSM are shown to match well with a benchmark direct Monte Carlo simulation method. The resulting probability that the maximum cement stress will exceed the nominal stress is 62%. The load and the bone and prosthesis geometries were found to be the parameters most likely to influence the magnitude of the cement stresses and therefore to contribute most to the probability of failure.
Skip Nav Destination
e-mail: mtb@soton.ac.uk
e-mail: doctor@soton.ac.uk
Article navigation
Technical Briefs
Effect of Geometrical Uncertainty on Cemented Hip Implant Structural Integrity
Mamadou T. Bah,
Mamadou T. Bah
Bioengineering Sciences Research Group, School of Engineering Sciences,
e-mail: mtb@soton.ac.uk
University of Southampton
, Highfield, Southampton SO17 1BJ, UK
Search for other works by this author on:
Martin Browne
Martin Browne
Bioengineering Sciences Research Group, School of Engineering Sciences,
e-mail: doctor@soton.ac.uk
University of Southampton
, Highfield, Southampton SO17 1BJ, UK
Search for other works by this author on:
Mamadou T. Bah
Bioengineering Sciences Research Group, School of Engineering Sciences,
University of Southampton
, Highfield, Southampton SO17 1BJ, UKe-mail: mtb@soton.ac.uk
Martin Browne
Bioengineering Sciences Research Group, School of Engineering Sciences,
University of Southampton
, Highfield, Southampton SO17 1BJ, UKe-mail: doctor@soton.ac.uk
J Biomech Eng. May 2009, 131(5): 054501 (5 pages)
Published Online: March 20, 2009
Article history
Received:
February 1, 2008
Revised:
November 11, 2008
Published:
March 20, 2009
Citation
Bah, M. T., and Browne, M. (March 20, 2009). "Effect of Geometrical Uncertainty on Cemented Hip Implant Structural Integrity." ASME. J Biomech Eng. May 2009; 131(5): 054501. https://doi.org/10.1115/1.3078172
Download citation file:
Get Email Alerts
Effect of Collagen Fiber Tortuosity Distribution on the Mechanical Response of Arterial Tissues
J Biomech Eng (February 2025)
Related Articles
A New Cemented Hip Prosthesis Concept
J. Med. Devices (June,2011)
Three-Dimensional Finite Element Analysis of Glenoid Replacement Prostheses: A Comparison of Keeled and Pegged Anchorage Systems
J Biomech Eng (August,2000)
Finite Element Modeling of Resurfacing Hip Prosthesis: Estimation of Accuracy Through Experimental Validation
J Biomech Eng (February,2010)
Simulation of Physiological Loading in Total Hip Replacements
J Biomech Eng (August,2006)
Related Proceedings Papers
Related Chapters
Introduction and Definitions
Handbook on Stiffness & Damping in Mechanical Design
STRUCTURAL RELIABILITY ASSESSMENT OF PIPELINE GIRTH WELDS USING GAUSSIAN PROCESS REGRESSION
Pipeline Integrity Management Under Geohazard Conditions (PIMG)
Subsection NB—Class 1 Components
Companion Guide to the ASME Boiler & Pressure Vessel Code, Volume 1, Second Edition