Finite element analysis of different contact bearing couples for human hip prosthesis

Shankar, S.; Prakash, L.; Kalayarasan, M.

doi:10.1504/ijbet.2013.053712

Cited by 23 publications

(16 citation statements)

References 29 publications

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“…30 CF/PEEK is a thermoplastic semicrystalline polymer in the polyethereterketone (PEEK) family with excellent mechanical and chemical resistance properties. The properties of 30 CF/PEEK in terms of strength and stiffness can increase by introducing continuous fibers at high concentrations depending on a medical application [ 11 ]. Because of its high tensile strength and stiffness of the material, 30 CF/PEEK can replace UHMWPE acetabular cups in orthopedic applications.…”

Section: Methodsmentioning

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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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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Section: Methodsmentioning

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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“…Quasi-static estimation of hip joint loading [8] In the cycle of movement, it is a substantial change -1.45 ≤ ≥ 4.4 (Fig. 3).…”

Section: Figurementioning

confidence: 99%

“…However, according to the scholarly work [8]and the original authors method for the endoprosthesis CoCrMo -PE-UHMW, if N = 2500 N, D2 = 32 mm,  = 0.098 mm the pressures are identical -10.2 MPa.…”

Section: Numerical Solution Of the Problemmentioning

confidence: 99%

Study of Contact Pressures in Total Hip Replacement

Czerniec¹,

Zubrzycki²

2020

Preprint

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Total hip arthroplasty is a complex procedure. The achievements of implantology enabled the development of a faithful representation of hip joint physiology as well as the production of materials that can successfully replace damaged natural tissues. A very important issue is the correct selection of the geometry of the endoprosthesis adequate to the load of the joint. Materials used for endoprosthesis are a metal head and a polymer cup (e.g. PE-UHMW). The main interactions in the endoprosthesis are friction and surface pressure, which must be limited, exceeding them causes the destruction of the biomechanical system - plastic deformation of the polymer and the formation of too large and unacceptable radial clearances. Based on the author's developed calculation method of hip joint endoprosthesis contact parameters, the impact on maximum contact pressure and the angle of contact of the joint load was estimated depending on the diameter of the endoprosthesis and radial clearance. The correctness of changing the values of maximum contact pressure from the mentioned parameters was determined. Correspondingly: an increase in joint load causes a linear increase in the maximum contact pressure; increasing the diameter of the endoprosthesis head - their non-linear decrease, and increasing radial clearance - their increase

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“…Enhanced bearing longevity can be expected provided an adherent defect free coating is achieved; and the elastic moduli of the substrate and coating are reasonably matched [148]. From another perspective, rigorous mechanical models (as well as market trends) suggest the use of dissimilar bearing materials in lieu of hard-on-hard devices (i.e., CoP vs. CoC) [149][150][151]. Due to differences in chemical affinities, elastic moduli, and hardness, Si 3 N 4 -on-XLPE bearings should not experience the same slip-stick behavior that was observed in the Si 3 N 4 -on-Si 3 N 4 couples, although additional simulator testing needs to confirm this supposition.…”

Section: Swm Ceramic-on-ceramic Hip Simulator Studymentioning

confidence: 99%

Silicon Nitride Bearings for Total Joint Arthroplasty

et al. 2016

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Abstract:The articulation performance of silicon nitride against conventional and highly cross-linked polyethylene, as well as for self-mated silicon nitride bearings, was examined in a series of standard hip simulation studies. Wear rates for polyethylene liners against silicon nitride femoral heads were consistent with reported literature, although higher than cobalt chromium controls. Excessive protein precipitation was a confounding factor in interpretation of the wear data. Post wear-test Raman spectroscopy of the cross-linked polyethylene liners showed no oxidative degradation. Wear of self-mated silicon nitride was found to be essentially zero and indistinguishable from alumina controls using continuously orbital hip simulation for up to three million cycles. However, introduction of an alternative loading profile from three to five million cycles, including a stop-dwell-start sequence, significantly increased wear for two of six silicon nitride couples. This behavior is associated with formation and disruption of a gelatinous silicic acid tribochemical film, and is consistent with a recurrent transition from fluid-film to boundary lubrication. Overall, these results suggest that silicon nitride articulation against dissimilar counterface surfaces (e.g., highly cross-linked polyethylene) is preferred.

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Finite element analysis of different contact bearing couples for human hip prosthesis

Cited by 23 publications

References 29 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

Study of Contact Pressures in Total Hip Replacement

Silicon Nitride Bearings for Total Joint Arthroplasty

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