Life Estimation of Hip Joint Prosthesis

Background: Patients suffering from osteoarthritis undergo surgery to replace hip joints with hip prosthesis implants. Today most acetabular cups of hip prostheses are made of Ultra-High-Molecular-Weight-Polyethylene. However, these materials acting as acetabular cups of the implant have been recalled since patients have been feeling uncomfortable and abstained from physical activities. A newly introduced material, 30% Carbon Reinforced Polyetherketone, possess better isotropic mechanical properties and lower wear rates. Objective: The research aims to compare the von-Mises stresses and deformation in static and dynamic loading of Ultra-High Molecular-Weight-Polyethylene to 30% Reinforced Carbon Fiber Polyetherketone using Finite Element Analysis. Material and Methods: An analytical study was performed to evaluate material selection and their contact performances of acetabular cups. Four pairs have been analyzed under loading conditions following ASTM F2996-13 and ISO 7206-4 standards. The acetabular cups options are made of 30% Carbon Reinforced Fiber Polyetherketone or Ultra-High-Molecular-Weight-Polyethylene. Besides, the femoral head and steam options are either Alumina Ceramic or Cobalt Chrome Molybdenum. Results: The yield strength of Ultra-High-Molecular-Weight-Polyethylene is considerably small, resulting in the acetabular cup to fail when applied to high loading conditions. Carbon Reinforced Polyetherketone with Alumina Ceramic yielded 65% lower deformation at stumbling phase. Conclusion: Since the study focuses on linear isotropic material properties, Alumina Ceramic dominates a higher elastic modulus than Cobalt Chrome Molybdenum, nominating it the best fit combination for lower von-Mises stresses, acting on the Carbon Reinforced Polyetherketone acetabular cup.

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“…In a complete walking cycle, the hip joint rotates 80° [ 15 ]. The femoral head of the radius for this present study is 12 mm.…”

Section: Resultsmentioning

confidence: 99%

Comparative Evaluation of Carbon Reinforced Polyetherketone Acetabular Cup using Finite Element Analysis

Abdal

Noorani

2020

J Biomed Phys Eng

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Fixation of Pauwel’s type-II femoral neck fracture with triangular, rectangular, and pentangular configuration cannulated screws using finite element analysis

Belwanshi

Jayaswal

Aherwar

2023

J Braz. Soc. Mech. Sci. Eng.

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Wear estimation of trapezoidal and circular shaped hip implants along with varying taper trunnion radiuses using finite element method

Chethan

Güldeniz

Bhat

et al. 2020

Computer Methods and Programs in Biomedicine

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Life Estimation of Hip Joint Prosthesis

Abstract: Hip joint is one of the largest weight-bearing structures in the human body. In

Cited by 13 publications

References 11 publications

Comparative Evaluation of Carbon Reinforced Polyetherketone Acetabular Cup using Finite Element Analysis

Comparative Evaluation of Carbon Reinforced Polyetherketone Acetabular Cup using Finite Element Analysis

Fixation of Pauwel’s type-II femoral neck fracture with triangular, rectangular, and pentangular configuration cannulated screws using finite element analysis

Wear estimation of trapezoidal and circular shaped hip implants along with varying taper trunnion radiuses using finite element method

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