Is 7206 ISO standard enough to prove the endurance of femoral components of hip prostheses?

The design of a cementless femoral stem that fractured at the neck–shoulder junction was analysed with reference to parts 4 and 8 of ISO standard 7206. The stresses in the section where fracturing occurred were calculated assuming the 2300 N loading specified in ISO 7206-8. The results show that the...

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Bibliographic Details
Published inEngineering failure analysis Vol. 15; no. 1; pp. 83 - 89
Main Author Chao, Jesús
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.01.2008
Subjects
7206 ISO standard
Cementless Hip prosthesis
Fatigue design
Ti6Al4V alloy
7206 ISO standard
Fatigue design
Cementless Hip prosthesis
Ti6Al4V alloy
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Summary:The design of a cementless femoral stem that fractured at the neck–shoulder junction was analysed with reference to parts 4 and 8 of ISO standard 7206. The stresses in the section where fracturing occurred were calculated assuming the 2300 N loading specified in ISO 7206-8. The results show that the prosthesis met ISO standard requirements regarding fatigue behaviour. However, this feature does not occur when a load of 4000 N, corresponding to a patient with a body weight of 1000 N, is applied. It is therefore suggested that patient body weight should be taken into account when designing and choosing the appropriate stem size.
ISSN:1350-6307
1873-1961
DOI:10.1016/j.engfailanal.2006.11.017