Fracture propagation propensity of ceramic liners during impingement-subluxation: a finite element exploration

Jacob M Elkins; Douglas R Pedersen; John J Callaghan; Thomas D Brown

doi:10.1016/j.arth.2011.06.023

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Fracture propagation propensity of ceramic liners during impingement-subluxation: a finite element exploration

Journal article

Peer reviewed

Fracture propagation propensity of ceramic liners during impingement-subluxation: a finite element exploration

Jacob M Elkins, Douglas R Pedersen, John J Callaghan and Thomas D Brown

The Journal of arthroplasty, Vol.27(4), pp.520-526

04/2012

DOI: 10.1016/j.arth.2011.06.023

PMCID: PMC3246563

PMID: 21855277

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Abstract

Although improvements in materials engineering have greatly reduced fracture rates in ceramic femoral heads, concerns still exist for liners. Ceramics are vulnerable to fracture due to impact and from stress concentrations (point and line loading) such as those associated with impingement-subluxation. Thus, ceramic cup fracture propensity is presumably very sensitive to surgical cup positioning. A novel fracture mechanics finite element formulation was developed to identify cup orientations most susceptible to liner fracture propagation for several impingement-prone patient maneuvers. Other factors being equal, increased cup inclination and increased anteversion were found to elevate fracture risk. Squatting, stooping, and leaning shoe-tie maneuvers were associated with the highest fracture risk. These results suggest that fracture risk can be reduced by surgeons' decreasing cup abduction and by patients' avoiding of specific activities.

Arthroplasty, Replacement, Hip - instrumentation

Biomechanical Phenomena

Ceramics

Computer Simulation

Equipment Failure Analysis

Femoracetabular Impingement - complications

Finite Element Analysis

Hip Dislocation - complications

Hip Prosthesis

Humans

Models, Biological

Movement

Posture

Prosthesis Failure

Risk Factors

Details

Title: Subtitle: Fracture propagation propensity of ceramic liners during impingement-subluxation: a finite element exploration
Creators: Jacob M Elkins - University of Iowa
Douglas R Pedersen - University of Iowa
John J Callaghan - University of Iowa
Thomas D Brown - University of Iowa
Resource Type: Journal article
Publication Details: The Journal of arthroplasty, Vol.27(4), pp.520-526
DOI: 10.1016/j.arth.2011.06.023
PMID: 21855277
PMCID: PMC3246563
ISSN: 0883-5403
eISSN: 1532-8406
Grant note: AR46601 / NIAMS NIH HHS R01 AR053553 / NIAMS NIH HHS R24 AR046601 / NIAMS NIH HHS R01 AR053553-04 / NIAMS NIH HHS R01 AR046601-05 / NIAMS NIH HHS AR53553 / NIAMS NIH HHS R01 AR046601 / NIAMS NIH HHS
Language: English
Date published: 04/2012
Academic Unit: Roy J. Carver Department of Biomedical Engineering; Orthopedics and Rehabilitation; Internal Medicine
Record Identifier: 9984304708402771

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