Finite element analysis of sliding distance and contact mechanics of hip implant under dynamic walking conditions

Gao, Yongchang; Zhang, Jin; Wang, Manyi

doi:10.1177/0954411915585380

Cited by 23 publications

(27 citation statements)

References 22 publications

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“…Given the lack of studies based on comprehensive patient‐specific data in the current literature, we compared our results qualitatively with previous reports that included single set of kinematics. The accumulation of sliding distance during gait cycle in our study agrees well with earlier findings, as shown in Figure b. All plots exhibited a sharp increase around 60% gait cycle, possibly because of a high transient high flexion velocity at toe‐off.…”

Section: Discussionsupporting

confidence: 92%

“…Wear of ultra‐high molecular weight polyethylene (UHMWPE) is closely related to the relative motion of the articulating surfaces. Owing to the convenience in implementing the material wear law, computational modeling has been frequently employed as a useful tool to investigate the wear behavior of UHMWPE . In the pioneering work by Maxian et al the calculation of sliding distance was incorporated into their finite element model and the Archard wear law was implemented to predict wear rate.…”

mentioning

confidence: 99%

“…This study offered insights into the mechanism of polyethylene wear and represented the first effort to predict polyethylene wear on a patient‐specific basis . However, radiograph‐based approach, compared to computational modeling, is unable to provide the complete distribution of sliding distance or CS ratio over the entire polyethylene surface, which may provide additional insights into the wear mechanism . There is a scarcity of available information regarding the variation of sliding distance or CS ratio among THA patients and their association with patient‐specific in vivo kinematics and component orientation.…”

mentioning

confidence: 99%

“…There is a scarcity of available information regarding the variation of sliding distance or CS ratio among THA patients and their association with patient‐specific in vivo kinematics and component orientation. Existing computational models in the current literature rely heavily on kinematic inputs either from standard laboratory testing protocols or from single subject data in the literature …”

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confidence: 99%

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In vivo sliding distance on the metal‐on‐polyethylene total hip arthroplasty articulation using patient‐specific gait analysis

Peng

Arauz

et al. 2018

Journal Orthopaedic Research

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Metal-on-polyethylene (MoP) is the most commonly used bearing surface in primary total hip arthroplasty (THA). Polyethylene wear debris remains a major concern. Studies investigating the wear performance based on patient-specific in vivo kinematics and component orientation remains largely lacking. The primary goal of this study was to identify patterns of the distribution of sliding distance and cross-shear ratio among THA patients. A validated approach combining dual fluoroscopic imaging system and computed-tomography was utilized to quantify in vivo gait kinematics and component orientations in 48 total hips. The distribution of accumulated sliding distance and cross-shear ratio over the polyethylene bearing surface was calculated and analyzed using principal component analysis (PCA). Strong patient-specific variation in sliding distance and cross-shear ratio was observed. PCA detected two principal components (PCs) of the sliding distance that together contribute to 94.8% of the total variation. PCA detected four PCs that together contribute to 86% of the total variation of the cross-shear ratio. Regression analysis identified a positive association between cross-shear magnitude and axial and frontal range of motion (RoM). Increased cup inclination, stem anteversion, and reduced cup anteversion may lead to superiorly distributed high cross-shear region, potentially accelerating wear. Our study investigated, in vivo sliding distance and cross-shear pattern using a comprehensive patient-specific dataset and detected several wear indicators under in vivo conditions. These findings provided useful reference values that may help to assess wear in MoP THA patients. © 2018 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res.

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Section: Discussionsupporting

confidence: 92%

mentioning

confidence: 99%

mentioning

confidence: 99%

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confidence: 99%

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In vivo sliding distance on the metal‐on‐polyethylene total hip arthroplasty articulation using patient‐specific gait analysis

Peng

Arauz

et al. 2018

Journal Orthopaedic Research

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“…Intel® Core(TM) i7-6820HQ CPU). However, Gao et al reported a total computational time for just solving motion equations of about 4 and 5 hours for implicit and explicit finite element simulations, respectively, on a 3.5 GHz personal computer [81]. Therefore, the developed model can be used to perform parametric studies for optimizing and assessing new implant designs due to relatively low computational time.…”

Section: Resultsmentioning

confidence: 99%

A dynamic model of polyethylene damage in dry total hip arthroplasties: wear and creep

Askari

Andersen

2018

Multibody Syst Dyn

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The creep and wear of ultra-high-weight polyethylene hip prostheses under physiological conditions are studied in the present research work. A fully integrated contact-coupled dynamic model based upon multibody dynamics methodology is developed, allowing the evaluation of not only sliding distance, but also contact mechanics as well as cross-shear effects and both average pressure and in-service duration associated with the creep phenomenon. In vivo forces and motions of hip joint are used as input for the dynamic simulation, which result in more realistic contact point trajectory and contact pressure, and consequently wear and creep compared to simplified inputs. The analysis also takes into account inertia forces due to hip motion, tribological properties of bearing bodies, and energy loss owing to contact-impact events. The principal molecular orientation (PMO) of the polyethylene cup is determined through an iterative algorithm and dynamic outcomes. Archard's wear law is also integrated into the multibody dynamics model in order for wear prediction in hip implants. Creep, besides wear, is attributed to polyethylene damage, which is investigated by implementing a creep model extracted from experimental data. The model is validated as compared to clinical data and numerical results available by previous published studies. It is shown that creep plays a significant role in hip damage along with wear both of which can be influenced by hip parameters, e.g. hip and clearance sizes. Moreover, the creep mechanism according to creep experiment is discussed and contributing factors to the wear phenomenon are analyzed throughout this study.

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Biomechanics and Biotribology of UHMWPE Artificial Hip Joints

Gao

Zhang

2019

Springer Series in Biomaterials Science and Engineering

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Finite element analysis of sliding distance and contact mechanics of hip implant under dynamic walking conditions

Abstract: This is a repository copy of Finite element analysis of sliding distance and contact mechanics of hip implant under dynamic walking conditions.

Cited by 23 publications

References 22 publications

In vivo sliding distance on the metal‐on‐polyethylene total hip arthroplasty articulation using patient‐specific gait analysis

In vivo sliding distance on the metal‐on‐polyethylene total hip arthroplasty articulation using patient‐specific gait analysis

A dynamic model of polyethylene damage in dry total hip arthroplasties: wear and creep

Biomechanics and Biotribology of UHMWPE Artificial Hip Joints

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