A new hip epiphyseal prosthesis: Design revision driven by a validated numerical procedure

Highlights ► We geometrically revised an epiphyseal hip prosthesis using finite element models. ► High stresses in the prototype implant promoted failure after implantation. ► Revision reduced the implant stresses while ensuring the implant stability. ► Numerical findings were corroborated by destru...

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Bibliographic Details
Published in:Medical engineering & physics 2011-12, Vol.33 (10), p.1203-1211
Main Authors: Martelli, S, Taddei, F, Cristofolini, L, Schileo, E, Rushton, N, Viceconti, M
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Biological and medical sciences
Biomechanical Phenomena
Computerized, statistical medical data processing and models in biomedicine
Epiphyseal hip prostheses
Epiphyses
Equipment Failure Analysis
Failure risk
Female
Femoral head resurfacing
Femoral Neck Fractures - etiology
Finite Element Analysis
Finite element model
Hip
Hip prosthesis biomechanics
Humans
In vitro simulation
Likelihood Functions
Male
Medical sciences
Models and simulation
Numerical pre-clinical validation
Orthopedic surgery
Prosthesis Design - methods
Radiology
Reproducibility of Results
Risk
Surgery (general aspects). Transplantations, organ and tissue grafts. Graft diseases
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Summary:Highlights ► We geometrically revised an epiphyseal hip prosthesis using finite element models. ► High stresses in the prototype implant promoted failure after implantation. ► Revision reduced the implant stresses while ensuring the implant stability. ► Numerical findings were corroborated by destructive tests before and after revision. ► The new device is a potential alternative to current hip epiphyseal devices.
ISSN:1350-4533
1873-4030
DOI:10.1016/j.medengphy.2011.05.010