Static strength analysis of a novel custom triflange acetabular component by experimental testing and finite element modelling
R. Kaak (TU Delft - Mechanical Engineering)
Thom Bitter – Mentor (Radboud University Medical Center)
Sjors Coenders – Mentor (Radboud University Medical Center)
N. Tümer – Mentor
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Abstract
Acetabular component revision surgery in people with severe acetabular bone defect is challenging and associated with higher failure rates compared to primary total hip arthroplasty. This MSc Thesis project aimed to assess the static strength of a novel custom triflange acetabular component (CTAC) by experimental testing and finite element (FE) modelling. Experimental validation of the developed FE model showed that the simulation underestimated the axial displacement of the femoral head as well as most implant strains. However, most numerically found implant strains showed a good linear correlation with the experimentally measured implant strains. Based on the experimental and numerical results, it was concluded that the developed CTAC has sufficient static strength to resist excessive static loads in multiple physiologically relevant directions. The developed CTAC has the potential to decrease the high failure rates currently associated with acetabular component revision surgery.