A review of squeaking in ceramic total hip prostheses

Askari, Ehsan; Flores, Paulo; Dabirrahmani, Danè; Appleyard, Richard

doi:10.1016/j.triboint.2015.09.019

Cited by 32 publications

(22 citation statements)

References 156 publications

(356 reference statements)

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“…This decision is subjective, generally based on changes in pitch, haptic or visual cues [7]. However, owing to non-ideal cavity preparation, lysis (implant loosening) and post-operative prosthesis dislocation due to insufficient stability at the time of implantation may occur which is a major cause for revision surgeries [2,4]. On the other hand, by increasing the primary stability too far the risk of peri-prosthetic fractures actually grows [4,8].…”

Section: Matec Web Of Conferences 148mentioning

confidence: 99%

“…Implant materials are hard (H) metal alloys (steel, titanium-based or more often made of cobalt-chromium), alumina/composite ceramics or soft (S) plastics e.g. the ultra-high molecular weight polyethylene [4]. Hard-on-hard (HoH) bearing articulations, i.e.…”

Section: Introductionmentioning

confidence: 99%

“…Hard-on-hard (HoH) bearing articulations, i.e. ceramic-on-ceramic or hard-on-soft combinations can be installed [4]. 14007 (2018) https://doi.org/10.1051/matecconf/201814814007 ICoEV 2017…”

Section: Introductionmentioning

confidence: 99%

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Vibro-acoustic and nonlinear analysis of cadavric femoral bone impaction in cavity preparations

et al. 2018

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Abstract. Owing to an ageing population, the impact of unhealthy lifestyle, or simply congenital or gender specific issues (dysplasia), degenerative bone and joint disease (osteoarthritis) at the hip pose an increasing problem in many countries. Osteoarthritis is painful and causes mobility restrictions; amelioration is often only achieved by replacing the complete hip joint in a total hip arthroplasty (THA). Despite significant orthopaedic progress related to THA, the success of the surgical process relies heavily on the judgement, experience, skills and techniques used of the surgeon. One common way of implanting the stem into the femur is press fitting uncemented stem designs into a prepared cavity. By using a range of compaction broaches, which are impacted into the femur, the cavity for the implant is formed. However, the surgeon decides whether to change the size of the broach, how hard and fast it is impacted or when to stop the excavation process, merely based on acoustic, haptic or visual cues which are subjective. It is known that non-ideal cavity preparations increase the risk of peri-prosthetic fractures especially in elderly people. This study reports on a simulated hip replacement surgery on a cadaver and the analysis of impaction forces and the microphone signals during compaction. The recorded transient signals of impaction forces and acoustic pressures (≈ 80 µs -2 ms) are statistically analysed for their trend, which shows increasing heteroscedasticity in the force-pressure relationship between broach sizes. TIKHONOV regularisation, as inverse deconvolution technique, is applied to calculate the acoustic transfer functions from the acoustic responses and their mechanical impacts. The extracted spectra highlight that system characteristics altered during the cavity preparation process: in the high-frequency range the number of resonances increased with impacts and broach size. By applying nonlinear time series analysis the system dynamics increase in complexity and demand for a larger minimum embedding dimension. The growing number of resonances with similar level of the transfer function indicates a higher propensity to dissipate energy over sound; the change in embedding dimension indicates a decrease in linearity. The spectral changes as well as the altered dimension requirements indicate either an improved coupling between the bone and the broach or the onset of micro-fractures caused by growing stress levels within the bone.

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Section: Matec Web Of Conferences 148mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Vibro-acoustic and nonlinear analysis of cadavric femoral bone impaction in cavity preparations

et al. 2018

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“…Most of these methods are based on variations of conventional processing methods being already well-stablished. It is interesting to note that the model developed in the present study and available fabrication processes can also be employed to optimize designs of functionallygraded coatings to improve the tribology performance of ceramic-onceramic hip implants to decrease wear and to eliminate hip squeaking (Askari et al, 2016(Askari et al, , 2015).…”

Section: A Brief Discussion On Fabrication Of Functionally-graded Cermentioning

confidence: 99%

A particle swarm-based algorithm for optimization of multi-layered and graded dental ceramics

Askari

Flores

Silva

2018

Journal of the Mechanical Behavior of Biomedical Materials

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The thermal residual stresses (TRSs) generated owing to the cooling down from the processing temperature in layered ceramic systems can lead to crack formation as well as influence the bending stress distribution and the strength of the structure. The purpose of this study is to minimize the thermal residual and bending stresses in dental ceramics to enhance their strength as well as to prevent the structure failure. Analytical parametric models are developed to evaluate thermal residual stresses in zirconia-porcelain multi-layered and graded discs and to simulate the piston-on-ring test. To identify optimal designs of zirconia-based dental restorations, a particle swarm optimizer is also developed. The thickness of each interlayer and compositional distribution are referred to as design variables. The effect of layers number constituting the interlayer between two based materials on the performance of graded prosthetic systems is also investigated. The developed methodology is validated against results available in literature and a finite element model constructed in the present study. Three different cases are considered to determine the optimal design of graded prosthesis based on minimizing (a) TRSs; (b) bending stresses; and (c) both TRS and bending stresses. It is demonstrated that each layer thickness and composition profile have important contributions into the resulting stress field and magnitude.

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“…Moreover, the demographics indicate an increase in number of younger patients (45-64 years) and hence, hip arthroplasties are now required to last over 30 years [3], with greater functional demands. Since the early artificial hip joints, around the 1960s, the most popular and used combination of hip prostheses has been a metal/ceramic femoral head against a polyethylene cup [4][5]. Ultra-high molecular weight polyethylene (UHMWPE) has shown a superior mechanical toughness and wear resistance compared to most other polymers, having commonly been the material of choice in both total knee and hip replacements [6].…”

Section: Introductionmentioning

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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A review of squeaking in ceramic total hip prostheses

Cited by 32 publications

References 156 publications

Vibro-acoustic and nonlinear analysis of cadavric femoral bone impaction in cavity preparations

Vibro-acoustic and nonlinear analysis of cadavric femoral bone impaction in cavity preparations

A particle swarm-based algorithm for optimization of multi-layered and graded dental ceramics

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

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