Numerical Analysis of Femoral Neck Angle Influence on Stress Distribution of Cemented Austin Moore Hip Prosthesis

Abstract:

This paper presents a finite element analysis regarding the stress distribution in a cemented Austin Moore type hip prosthesis. The 3-D model was obtained using a Roland PICZA 3-D laser scanner. The applied loads simulate the normal gait cycle. The prosthesis is made from stainless steel with a femoral head of 45mm diameter. The numerical analysis was performed using the ABAQUS code. The results showed that the stress level in the cement is sensitive to the femoral neck angle. Starting with a standard, 125° angle, and increasing the angle with up to 5°, the resulting stress can be reduced with more than 10%. The proposed angle increase produces a more uniform stress distribution in the cemented section, increasing the durability of the arthoplasty.

• Periodical: Key Engineering Materials (Volumes 525-526)
• Pages: 41-44
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.525-526.41
• Online since: November 2012
• Authors: Lucian Bogdan, Cristian Sorin Nes, Nicolae Faur, Mihaela Amarandei, Angelica Enkelhardt
• Keywords: Austin Moore, Cement, HIP, Numerical, Prosthesis, Stress

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