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biotribology of artificial hip joints

World Journal of Orthopedics 2015年第1期6卷 77-94页

作者： Francesca Di Puccio Lorenza Mattei Department of Civil and Industrial Engineering University of Pisa

Hip arthroplasty can be considered one of the major successes of orthopedic surgery, with more than 350000 replacements performed every year in the United States with a constantly increasing rate. The main limitations to the lifespan of these devices are due to tribological aspects, in particular the wear of mating surfaces, which implies a loss of matter and modification of surface geometry. However, wear is a complex phenomenon, also involving lubrication and friction. The present paper deals with the tribological performance of hip implants and is organized in to three main sections. Firstly, the basic elements of tribology are presented, from contact mechanics of ball-in-socket joints to ultra high molecular weight polyethylene wear laws. Some fundamental equations are also reported, with the aim of providingthe reader with some simple tools for tribological investigations. In the second section, the focus moves to artificial hip joints, defining materials and geometrical properties and discussing their friction, lubrication and wear characteristics. In particular, the features of different couplings, from metal-on-plastic to metal-on-metal and ceramic-on-ceramic, are discussed as well as the role of the head radius and clearance. How friction, lubrication and wear are interconnected and most of all how they are specific for each loading and kinematic condition is highlighted. Thus, the significant differences in patients and their lifestyles account for the high dispersion of clinical data. Furthermore, such consideration has raised a new discussion on the most suitable in vitro tests for hip implants as simplified gait cycles can be too far from effective implant working conditions. In the third section, the trends of hip implants in the years from 2003 to 2012 provided by the National Joint Registry of England, Wales and Northern Ireland are summarized and commented on in a discussion.

关键词： Arthroplasty Replacement Hip biotribology Wear Lubrication Friction

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Effects of TaN nanoparticles on microstructure,mechanical properties and tribological performance of PEEK coating prepared by electrophoretic deposition

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Transactions of Nonferrous Metals Society of China 2022年第10期32卷 3334-3348页

作者： Lin CAO Peng ZHANG Shuang-jian LI Qi-wei WANG Da-hai ZENG Chuan-yong YU Qing-yang LI Yu-wen LIAO Zhi-dan LIN Wei LI Institute of Advanced Wear&Corrosion Resistant and Functional Materials Jinan UniversityGuangzhou 510632China Shaoguan Research Institute of Jinan University Shaoguan 512027China

In order to solve the friction,wear and lubrication problems of titanium,a series of TaN/ployether−ether−ketone(PEEK)coatings were developed by electrophoretic deposition,and the effects of TaN nanoparticles on the microstructure,mechanical properties and tribological performance of coatings were *** manifest that the introduction of TaN nanoparticles into PEEK coatings could improve the deposition efficiency,enhance the resistant deform capacity,increase the hardness,elastic modulus and adhesive bonding *** with the pure PEEK coating,the friction coefficient of P-TN-3 was greatly reduced by 31.25%.The wear resistance of P-TN-3 was also improved in huge boost,and its specific wear rate was decreased from 9.42×10^(−5) to 1.62×10^(−5) mm^(3)·N^(−1)·m^(−1).The homogeneous composite TaN/PEEK coatings prepared by electrophoretic deposition were well-adhered to the titanium alloy substrate,TaN nanoparticles could improve the strength of PEEK coating,and provide wear-resistance protection for titanium alloys.

关键词： ployether−ether−ketone coating tantalum nitride particle reinforcement microstructure mechanical properties biotribology

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A review of advances in tribology in 2020–2021

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Friction 2022年第10期10卷 1443-1595页

作者： Yonggang MENG Jun XU Liran MA Zhongmin JIN Braham PRAKASH Tianbao MA Wenzhong WANG State Key Laboratory of Tribology in Advanced Equipment Tsinghua UniversityBeijing 100084China School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China School of Mechanical Engineering University of LeedsLeeds LS29JTUK School of Mechanical and Vehicle Engineering Beijing Institute of TechnologyBeijing 100082China

Around 1,000 peer-reviewed papers were selected from 3,450 articles published during 2020–2021,and reviewed as the representative advances in tribology research *** survey highlights the development in lubrication,wear and surface engineering,biotribology,high temperature tribology,and computational tribology,providing a show window of the achievements of recent fundamental and application researches in the field of tribology.

关键词： lubrication friction wear surface engineering tribology biotribology high temperature computer simulations

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Friction behaviour between a laparoscopic grasper and the large intestine during minimally invasive surgery

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Biosurface and biotribology 2022年第1期8卷 58-68页

作者： Yan Guo Chengmo Cai Wei Li Key Laboratory for Advanced Technology of Materials of Ministry of Education Tribology Research InstituteSouthwest Jiaotong UniversityChengduChina

Slippage is a common phenomenon between laparoscopic graspers and tissues during minimally invasive surgery,which may lead to inefficient surgical operations,prolonged operation time,and increased patient *** stability factors related to the friction behaviour between laparoscopic graspers and the large intestine,including bio-surface liquids,pulling angle,and surface profile of graspers,were *** friction behav-iour at the large intestine-grasper interface was tested using a UMT-II tribometer under the conditions of clamping force of 1-4 N,sliding displacement of 15 mm,and sliding velocity of 2 mm/s to simulate the grasping and pulling operations of soft *** results showed that the bio-surface liquid(serum)of the large intestine significantly decreased the friction coefficient,thus reducing the grasping efficiency.A pulling angle of 15°could generate the peak frictional force and enhance the grasping *** frictional force increased with the ratio of the profile surface area of the *** results demonstrate that the grasping stability can be improved by changing either the bio-surface liquid condition or the pulling *** addition,a grasper with a larger profile surface area can also prevent slippage due to its significant influence on the pressure distribution and actual contact area for tissue retention.

关键词： biointerface biomaterials biomechanics biotribology wear mechanism

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The influence of lubricant temperature on the wear of total knee replacements

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Biosurface and biotribology 2023年第3期9卷 71-77页

作者： Raelene M.Cowie Adam Briscoe Louise M.Jennings Institute of Medical and Biological Engineering University of LeedsLeedsUK Invibio Ltd.Thornton Cleveleys LancashireUK

Experimental in vitro simulation can be used to predict the wear performance of total knee *** in vitro simulation should aim to replicate the in vivo loading,motion and environment experienced by the joint,predicting wear and potential failure whilst minimising test *** wear simulation can be sensitive to envi-ronmental conditions;the environment temperature is one variable which should be controlled and was the focus of this *** this study,the wear of an all‐polymer(PEEK‐OPTIMA™polymer‐on‐UHMWPE)total knee replacement and a conventional cobalt chrome‐on‐UHMWPE implant of similar initial surface topography and geometry were investigated under elevated temperature *** wear was compared to a previous study of the same implants under simulator running temperature(*** heating the test environment).Under elevated temperature conditions,the wear rate of the UHMWPE tibial inserts was low against both femoral component materials(mean<2 mm3/million cycles)and significantly lower(p<0.05)than for investigations at simulator running *** precipitation from the lubricant onto the component articulating surfaces is a possible explanation for the lower *** study highlights the need to understand the influence of different variables including envi-ronmental temperature to minimise the test artefacts during wear simulation which may affect the wear rates.

关键词： biotribology PEEK total knee replacement UHMWPE wear

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Synthesis of titanium carbide coating on Ti15Mo alloy and its tribological behaviour

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Biosurface and biotribology 2023年第4期9卷 176-186页

作者： Hongxiang Wang Jiajia Shen Weipeng Zhang Zhentao Xu Jingjing Zheng Yong Luo Jiangsu Vocational College of Electronics and Information HuaianChina School of Materials Science and Physics China University of Mining&TechnologyXuzhouChina

Ti15Mo alloy has been regarded as one of the most potential biomedical materials due to its excellent ***,the low hardness and poor wear resistance of titanium alloy limit the further ***,high temperature solid carburising technology was performed on the surface of Ti15Mo alloys to prepare titanium carbide(TiC)coating with graphene(G)as the carburising *** microstructure,mechanical properties,and tribological properties of TiC coating under different lubricants were *** showed that TiC coating was closely bonded to the titanium *** maximum thickness of TiC coating treated with 1150°C was approximately 184.02μm,and the microhardness of alloys treated with 1100°C can achieve 1221.5 *** modified Ti15Mo alloys showed improved tribological performance compared to the original *** wear mechanisms of modified Ti15Mo alloys were abrasive wear and adhesive wear under the SBF lubricant,and the TiC coating was slightly peeled *** overall friction coefficient and wear rate under 25%calf serum lubricant were lower than the SBF lubricant,and surface scratches were almost absent,and slight abrasive wear and adhesive wear occurred on the surface.

关键词： artificial joint biotribology friction wear

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Slippery Surface of Nepenthes alata Pitcher： The Role of Lunate Cell and Wax Crystal in Restricting Attachment Ability of Ant Camponotus japonicus Mayr

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Journal of Bionic Engineering 2016年第3期13卷 373-387页

作者： Lixin Wang Shiyun Dong Qiang Zhou College of Mechanical Engineering Hebei University of Science and Technology Shijiazhuang 050018 China National Key Laboratory for Remanufacturing Academy of Armord Forces Engineering Beijing 100072 China Department of Mechatronic Engineering China Agricultural Universing Beijing 100083 China

This study attempts to investigate how the slippery surface of Nepenthes alata pitchers restricts the attachment ability of ant Camponotus japonicus Mayr, via climbing behavior observation and friction force measurement. Ants exhibited ineffective climbing behaviors and rather small friction forces when attached to upward-oriented slippery surfaces, but opposite phenomena were shown when on inverted surfaces. Friction forces of intact, claw tip-removed and pad-destroyed ants were measured on intact and de-waxed slippery surfaces, exploring the roles of wax crystals and lunate cells in restricting ant＇s attachment. On downward-directed slippery surfaces, greater forces were exhibited by intact and pad-destroyed ants; on the two slippery sur- faces, pad-destroyed ants presented slightly smaller forces and clawless ants generated considerably smaller forces. Somewhat different force was provided by clawless ants on upward and downward oriented slippery surfaces, and slightly higher force was shown when ants climbed on wax-removed surface. Results indicate that the lunate cells contribute greatly to decrease the friction force, whereas the wax crystals perform a supplementary role. Mechanical analysis suggests that the directionally growing lunate cells possess a sloped structure that effectively prevents the claw＇s mechanical interlock, reducing the ant＇s attachment ability considerably. Our conclusion supports a further interpretation of slippery surface＇s anti-attachment mecha- nism, also provides theoretical reference to develop biomimetic slippery plate to trap agricultural insect.

关键词： biotribology Nepenthes alata pitcher slippery surface lunate cell wax crystal ant Camponotusjaponicus Mayr

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A review of recent advances in tribology

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Friction 2020年第2期8卷 221-300页

作者： Yonggang MENG Jun XU Zhongmin JIN Braham PRAKASH Yuanzhong HU State Key Laboratory of Tribology Tsinghua UniversityBeijing 100084China School of Mechanical Engineering Southwest Jiaotong UniversityChengdu 610031China School of Mechanical Engineering University of LeedsLeeds LS29JTUK

The reach of tribology has expanded in diverse fields and tribology related research activities have seen immense growth during the last *** review takes stock of the recent advances in research pertaining to different aspects of tribology within the last 2 to 3 *** aspects of tribology that have been reviewed including lubrication,wear and surface engineering,biotribology,high tem perature tribology,and computational *** review attempts to highlight recent research and also presents future outlook pertaining to these *** may however be noted that there are limitations of this *** of the most important of these is that tribology being a highly multidisciplinary field,the research results are widely spread across various disciplines and there can be omissions because of ***,the topics dealt with in the field of tribology include only some of the salient topics(such as lubrication,wear,surface engineering,biotribology,high tem perature tribology,and computational tribology)but there are many more aspects of tribology that have not been covered in this *** these limitations it is hoped that such a review will bring the most recent salient research in focus and will be beneficial for the growing community of tribology researchers.

关键词： tribology biotribology lubrication superlubricity friction wear,surface engineering

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Wettability Modification for Biosurface of Titanium Alloy by Means of Sequential Carburization

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Journal of Bionic Engineering 2009年第3期6卷 219-223页

作者： Yong Luo~(1,2) Shi-rong Ge~1 Zhong-min Jin~21.Institute of Tribology and Reliability Engineering,School of Material Science and Engineering,China University of Mining and Technology,Xuzhou 221008,P.R China2.Institute of Medical and Biological Engineering,School of Mechanical Engineering,University of Leeds,Leeds LS2 9JT,UK Institute of Tribology and Reliability Engineering School of Material Science and Engineering China University of Mining and Technology Xuzhou P. R. China Institute of Medical and Biological Engineering School of Mechanical Engineering University of Leeds Leeds UK

Microporous titanium carbide coating was successfully synthesized on medical grade titanium alloy by using sequential *** in the surface morphology of titanium alloy occasioned by sequential carburization were characterized and the wettability characteristics were ***,the dispersion forces were calculated and *** results indicate that sequential carburization is an effective way to modify the wettability of titanium *** the carburization the surface dispersion force of titanium alloy increased from 76.5×10^(-3)J·m^(-2) to 105.5×10^(-3) J·m^(-2),with an enhancement of 37.9 %.Meanwhile the contact angle of titanium alloy decreased from 83° to 71.5°,indicating a significant improvement of wettability,which is much closer to the optimal water contact angle for cell adhesion of 70°.

关键词： biotribology wettability titanium alloy sequential carburization biosurface

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Study on Biotribological Behavior of the Combined Joint of CoCrMo and UHMWPE/BHA Composite in a Hip Joint Simulator

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Journal of Bionic Engineering 2009年第4期6卷 378-386页

作者： Qingliang Wang, Jinlong Liu, Shirong GeCollege of Materials and Engineering, China University of Mining and Technology, Xuzhou 221007, P. R. China College of Materials and Engineering China University of Mining and Technology Xuzhou P. R. China

UHMWPE composites reinforced with Bovine Bone Hydroxyapatite(BHA)in different contents were prepared by heat pressing formation method.A hip joint wear simulator was used to investigate the biotribological behavior of UHMWPE/BHA composite acetabular cups against CoCrMo alloy femoral heads in bovine synovia lubrication at 37±1 ℃.It was found that the addition of BHA powder to UHMWPE can improve the hardness and creep modulus of UHMWPE/BHA composites,and decrease their wear rates under bovine synovia *** the content of BHA filler particles was up to 30 wt%, UHMWPE/BHA composites demonstrated the well design performances of the surface and biotribological ***, ploughing and slight adhesive wear were the main wear mechanisms for UHMWPE and its *** addition,the sizes of wear particles became larger with an increase in BHA powder *** results suggest that BHA filler is a desirable component to increase the wear resistance of UHMWPE/BHA composites for biomedical applications.

关键词： UHMWPE hydroxyapatite biotribology joint prosthesis

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