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Reliability analyses of the hip joint ceramic head under oblique loading production inaccuracies
Fuis, Vladimír
Paper presents the analysis on the stress in the ceramic head and its reliability for different loading angle, which simulates the physiological loading. The analysed system consists of the testing stem and ceramic head of the hip joint endoprosthesis thout the production inaccuracies in the region of the cone contact area between the head and the stem. The stress is calculated by FEM - system ANSYS, head's reliability is based on Weibull weakest link theory
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Hip joint ceramic head reliability versus contact cone production inaccuracies
Fuis, Vladimír
The paper contains the results of the stress and reliability analyses of the total hip joint endoprosthesis ceramic head. The modelled system consists of the two parts: ceramic head and steel stem. The ordering of mentioned system is according the norm ISO 7206-5. The model production inaccuracies of the contact taper of the head and the stem are considered. The head stresses are obtained from the FEM solution and the head reliability is based on the Weibull weakest link theory.
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