Finite element simulation of early creep and wear in total hip arthroplasty

Bevill, Scott L.; Bevill, Grant; Penmetsa, Janaki R.; Petrella, Anthony J.; Rullkoetter, Paul J.

doi:10.1016/j.jbiomech.2004.10.022

Cited by 80 publications

(102 citation statements)

References 22 publications

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“…Hence, k must be updated, say, 100 times during the cycle according to the variation of the contact pressure with time and with location on the bearing surface. Computer models of the acetabular cup wear developed so far [26][27][28][29] are deficient in the sense that they omit the slide track shape. They involve the sliding distance only, as if the multidirectionality of the motion did not affect the wear at all.…”

Section: Discussionmentioning

confidence: 99%

Effect of contact pressure on wear and friction of ultra-high molecular weight polyethylene in multidirectional sliding

Saikko¹

2006

Proc Inst Mech Eng H

126

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Please cite the original version: Saikko, Vesa. 2006 All material supplied via Aaltodoc is protected by copyright and other intellectual property rights, and duplication or sale of all or part of any of the repository collections is not permitted, except that material may be duplicated by you for your research use or educational purposes in electronic or print form. You must obtain permission for any other use. Electronic or print copies may not be offered, whether for sale or otherwise to anyone who is not an authorised user. ABSTRACTComputational wear models need input data from valid tribological tests. For the wear model of total hip prosthesis, the contact pressure dependence of wear and friction of ultra-high molecular weight polyethylene (UHMWPE) against polished CoCr in diluted calf serum lubricant was studied, and useful input data produced. Two test devices were designed and built, heavy load circularly translating pin-on-disk (HL-CTPOD) wear test device and HL-CTPOD friction measurement device. Both can be used with a wide range of loads. The wear surface diameter of the test pin was kept constant, 9 mm, whereas the load was varied so that the nominal contact pressure ranged from 0.1 MPa to 20 MPa. The wear factor decreased with increasing contact pressure, whereas the coefficient of friction first increased with increasing contact pressure with low pressure values, and then decreased. Up to the pressure of 2.0 MPa, the wear mechanisms and wear factors were in good agreement with clinical findings. In the critical range of 2.0-3.5 MPa, the wear mechanisms and wear factors started to differ from clinical ones, and the decrease of the wear factor steepened. The discrepancy became more and more evident as the pressure was gradually increased beyond 3.5 MPa. It appears that the pressure value of 2.0 MPa should not be exceeded in pin-on-disk wear tests that are to reproduce the clinical wear of UHMWPE acetabular cups.

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Section: Discussionmentioning

confidence: 99%

Effect of contact pressure on wear and friction of ultra-high molecular weight polyethylene in multidirectional sliding

Saikko¹

2006

Proc Inst Mech Eng H

126

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“…A previously developed creep formulation for the PE bearings of total hip joints, by Bevill et al 17 and Matsoukas et al, 18 was applied in this study. The creep model was based on a uniaxial creep test and developed by Lee and Pienkowski.…”

Section: Creep Modelmentioning

confidence: 99%

“…The Archard wear equation has been the general consideration in most of the computational wear studies. [16][17][18] However, the wear factor of UHMWPE bearings has been found to be a strong function of contact pressure rather than a constant, as is required by the Archard law. 9 Wear modelling has been improved recently by the development of a contact area dependent wear law, 9 in which wear coefficient can be generally seen as a constant over the range of contact pressures likely to be experienced in PE hips and knees.…”

Section: Introductionmentioning

confidence: 99%

Computational modelling of polyethylene wear and creep in total hip joint replacements: Effect of the bearing clearance and diameter

Liu

Fisher

Zhang

2012

Proceedings of the Institution of Mechanical Engineers, Part J:

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Computational wear modelling has been improved using a contact area dependent wear law for the conventional ultrahigh molecular weight polyethylene used in total hip joint bearings. The current designs of polyethylene bearings tend to use larger diameter heads to achieve improved motion function for patients in clinical practice, but the wear of the bearing may also increase due to the increase in contact area associated with the larger bearings. Additionally, bearing clearance, which is the difference in diameter or radius between the cup and head bearing surfaces, may also play an important role in affecting the wear. This study particularly investigates the effect of bearing clearance on polyethylene wear, for different femoral head diameters, through a parametric study using the computational modelling method. The effect of creep of polyethylene on the contact area and wear was considered, since polyethylene creep can account for a significantly large proportion of volumetric change, particularly during the initial loading stage, and an increase in the contact area. The predicted wear rate was found to be comparable to the experimental wear rate found in independent simulator tests. The polyethylene bearing with decreased bearing clearances led to a substantial increase in the wear rate, particularly when combined with large diameters.

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“…In order to increase the life span of an implant, a number of in vivo and in vitro experiments have been conducted [1,4,5]. McCaskie et al [10] tried to improve interlock between cement and bone around the femoral stem by using high pressure and reducing viscosity of cements.…”

Section: C406mentioning

confidence: 99%

Computer simulation of polymethylmethacrylate bone cement flow through femoral canal and cancellous bone

Srimongkol¹,

Wiwatanapataphee²,

Wu³

2006

ANZIAMJ

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Polymethylmethacrylate bone cements have been widely used in orthopaedic surgery for the fixation of artificial joints such as hip replacement. Understanding the flow of cement is crucial to the success of the process, as the cement flow determines the final shape of the filling and consequently the strength and durability of the structure. A mathematical model based on the finite element method is developed to simulate the flow of cement through femoral canal and cancellous bone. The cement is assumed as a power law non-Newtonian fluid * Dept. and its flow in femoral canal is governed by the non-linear NavierStokes equations. The cancellous bone is modelled as a porous media and the Brinkman equations are used to describe the flow of cement through the bone. Based on the model developed, various numerical experiments were carried out to investigate the influence of cement property and surgical conditions on flow pattern, pressure distribution and shear rate.

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Finite element simulation of early creep and wear in total hip arthroplasty

Cited by 80 publications

References 22 publications

Effect of contact pressure on wear and friction of ultra-high molecular weight polyethylene in multidirectional sliding

Effect of contact pressure on wear and friction of ultra-high molecular weight polyethylene in multidirectional sliding

Computational modelling of polyethylene wear and creep in total hip joint replacements: Effect of the bearing clearance and diameter

Computer simulation of polymethylmethacrylate bone cement flow through femoral canal and cancellous bone

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