Relevant bibliographies by topics / Total surface bearing

Academic literature on the topic 'Total surface bearing'

Author: Grafiati
Published: 10 December 2022
Last updated: 29 January 2023

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Journal articles on the topic "Total surface bearing"

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Zagra, Luigi, and Enrico Gallazzi. "Bearing surfaces in primary total hip arthroplasty." EFORT Open Reviews 3, no. 5 (May 2018): 217–24. http://dx.doi.org/10.1302/2058-5241.3.180300.

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Total hip arthroplasty (THA) is widely considered one of the most successful surgical procedures in orthopaedics. It is associated with high satisfaction rates and significant improvements in quality of life following surgery. On the other hand, the main cause of late revision is osteolysis and wear, often a result of failure of bearing surfaces. Currently, several options are available to the surgeon when choosing the bearing surface in THA (ceramic-on-ceramic (CoC), ceramic-on-polyethylene (CoPE), metal-on-polyethylene (MoPE)), each with advantages and drawbacks. Very few studies have directly compared the various combinations of bearings at long-term follow-up. Randomized controlled trials show similar short- to mid-term survivorship among the best performing bearing surfaces (CoC, CoXLPE and MoXLPE). Selection of the bearing surface is often ‘experience-based’ rather than ‘evidence-based’. The aim of this paper is therefore to evaluate the main advantages and drawbacks of various types of tribology in THA, while providing practical suggestions for the surgeon on the most suitable bearing surface option for each patient.Cite this article: EFORT Open Rev 2018;3 DOI: 10.1302/2058-5241.3.180300.
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Walker, Peter S. "Bearing Surface Design in Total Knee Replacement." Engineering in Medicine 17, no. 4 (October 1988): 149–56. http://dx.doi.org/10.1243/emed_jour_1988_017_041_02.

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Surfaces for condylar total knee replacement are designed using computergraphics techniques. An average anatomical femoral surface is represented mathematically. Mathematical equations are written to describe normal knee motion and normal laxity. Tibial surfaces are generated by placing the femur stepwise in multiple sequential positions, through a defined three-dimensional motion or laxity path. In addition, a flat tibial surface is defined, to represent the least amount of femoral-tibial conformity in currently-used knee replacements. Elasticity theory is used to calculate the maximum contact stresses at the femoral-tibial contact points. The least stresses are produced with a fixed axis cylindrical motion, while the highest are with a flat tibial surface. A surface based on laxity produces lower stresses than for normal knee motion, and is thought to be acceptable in terms of both freedom of motion and stability. Such a laxity surface is proposed as being suitable for total knee design.
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Jin, Z. M., D. Dowson, and J. Fisher. "Stress Analysis of Cushion form Bearings for Total Hip Replacements." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 205, no. 4 (December 1991): 219–26. http://dx.doi.org/10.1243/pime_proc_1991_205_297_02.

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Cushion form bearings comprise a thin layer of low elastic modulus material on the articulating surface of the bearing, which can deform to help preserve a film of lubricant between the bearing surfaces and therefore reduce friction and wear. The long-term function of this type of bearing is dependent on the strength and durability of this compliant layer. Finite difference and finite element methods have been used to analyse the stress distribution in the compliant layer of cushion form bearing for artificial hip joints under physiological loading conditions. A good agreement between finite difference and finite element methods was found. Under normal loading, the highest value of the maximum shear stress was found to be at the interface between the compliant layer and the more rigid substrate close to the edge of the contact. The values of maximum shear stress in the centre of the contact close to the articulating surface were lower than in the equivalent Hertzian contact. A friction force acting at the surface had little effect on the stress distribution for coefficients of friction less than 0.05. However, for higher values of friction coefficient (larger than 0.2), corresponding to inadequate lubrication, the maximum shear stress increased by a factor of four and was found to be located at the surface. The analysis predicts that the mode of failure will be at the interface with the substrate under fluid film or mixed lubrication conditions and at the articulating surface when the bearing runs dry with higher levels of friction. Both failure modes have been observed experimentally under the conditions specified.
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Cates, Casey A., and Michael H. Huo. "Alternative bearing surface in total hip arthroplasty." Current Opinion in Orthopaedics 16, no. 1 (February 2005): 21–24. http://dx.doi.org/10.1097/01.bco.0000151396.79069.6e.

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Sharkey, Peter F., and Michael R. Bloomfield. "Bearing Surface Failure in Total Knee Arthroplasty." Seminars in Arthroplasty 23, no. 4 (December 2012): 258–61. http://dx.doi.org/10.1053/j.sart.2013.01.009.

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Chen, Long, Fei Xing, Yuanzheng Wang, Rui He, Jingming He, Yunwen Xu, Cheng Wang, et al. "Outcome analysis of various bearing surface materials used in total hip replacement." Materials Express 10, no. 3 (March 1, 2020): 301–13. http://dx.doi.org/10.1166/mex.2020.1651.

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Since the first total hip replacement (THR) in 1938 by Philip Wiles, prosthesis materials and THR surgical technologies have developed rapidly. In this review, we use internationally-published research to synthesize a comprehensive analysis of the specific characteristics and clinical outcomes of different bearing surfaces used in THR. Polyethylene, metallic alloys, and ceramic have become the three most commonly used hip prosthesis bearing surfaces after decades of hip implant development. Different bearing surface types have varying characteristics that offer specific benefits and risks of complication. A thorough understanding of the unique properties and possible complications of each type of bearing surface is critical to surgeons tasked with selecting appropriate implant materials for total hip replacement.
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Chapman-Sheath, P., S. Cain, W. J. M. Bruce, W. K. Chung, and W. R. Walsh. "Surface roughness of the proximal and distal bearing surface of mobile bearing total knee prostheses." Journal of Arthroplasty 17, no. 6 (September 2002): 713–17. http://dx.doi.org/10.1054/arth.2002.33545.

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Zika, T., I. C. Gebeshuber, F. Buschbeck, G. Preisinger, and M. Gröschl. "Surface analysis on rolling bearings after exposure to defined electric stress." Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology 223, no. 5 (March 18, 2009): 787–97. http://dx.doi.org/10.1243/13506501jet538.

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This article gives an overview about classical and frequency converter-induced spurious bearing currents in induction machines and discusses typical damage patterns caused by the current passage. To investigate on the electric damage mechanisms, test bearings are operated in a test rig and exposed to specific (classical low-frequency, and high-frequency) bearing currents. The induced damages to the surfaces are analysed visually and with the help of an atomic force microscope, and compared for the different electric regimes applied. Further, the electrically damaged bearing surfaces are characterized by standard roughness parameters. The surface structure observable on certain test bearings shows good correlation to the structure found with a bearing that had failed in the field under similar electric conditions. One of the investigated electric regimes applying high-frequency currents proved capable of generating fluting patterns - as found in real applications - on the test rig. The experiments also indicate that high-frequency bearing currents, although in total dissipating less energy, are more dangerous to a bearing than continuous current flow. The presented method gives a good starting point for further investigation on electric current damage in bearings, especially regarding high-frequency bearing currents, and on bearing/grease lifetime under specific electric regimes.
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Hexter, A. T., S. M. Hislop, G. W. Blunn, and A. D. Liddle. "The effect of bearing surface on risk of periprosthetic joint infection in total hip arthroplasty." Bone & Joint Journal 100-B, no. 2 (February 2018): 134–42. http://dx.doi.org/10.1302/0301-620x.100b2.bjj-2017-0575.r1.

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Aims Periprosthetic joint infection (PJI) is a serious complication of total hip arthroplasty (THA). Different bearing surface materials have different surface properties and it has been suggested that the choice of bearing surface may influence the risk of PJI after THA. The objective of this meta-analysis was to compare the rate of PJI between metal-on-polyethylene (MoP), ceramic-on-polyethylene (CoP), and ceramic-on-ceramic (CoC) bearings. Patients and Methods Electronic databases (Medline, Embase, Cochrane library, Web of Science, and Cumulative Index of Nursing and Allied Health Literature) were searched for comparative randomized and observational studies that reported the incidence of PJI for different bearing surfaces. Two investigators independently reviewed studies for eligibility, evaluated risk of bias, and performed data extraction. Meta-analysis was performed using the Mantel–Haenzel method and random-effects model in accordance with methods of the Cochrane group. Results Our search strategy revealed 2272 studies, of which 17 met the inclusion criteria and were analyzed. These comprised 11 randomized controlled trials and six observational studies. The overall quality of included studies was high but the observational studies were at high risk of bias due to inadequate adjustment for confounding factors. The overall cumulative incidence of PJI across all studies was 0.78% (1514/193 378). For each bearing combination, the overall incidence was as follows: MoP 0.85% (1353/158 430); CoP 0.38% (67/17 489); and CoC 0.53% (94/17 459). The meta-analysis showed no significant difference between the three bearing combinations in terms of risk of PJI. Conclusion On the basis of the clinical studies available, there is no evidence that bearing choice influences the risk of PJI. Future research, including basic science studies and large, adequately controlled registry studies, may be helpful in determining whether implant materials play a role in determining the risk of PJI following arthroplasty surgery. Cite this article: Bone Joint J 2018;100-B:134–42.
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Jin, Z. M., D. Dowson, and J. Fisher. "Analysis of fluid film lubrication in artificial hip joint replacements with surfaces of high elastic modulus." Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine 211, no. 3 (March 1, 1997): 247–56. http://dx.doi.org/10.1243/0954411971534359.

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Lubrication mechanisms and contact mechanics have been analysed for total hip joint replacements made from hard bearing surfaces such as metal-on-metal and ceramic-on-ceramic. A similar analysis for ultra-high molecular weight polyethylene (UHMWPE) against a hard bearing surface has also been carried out and used as a reference. The most important factor influencing the predicted lubricating film thickness has been found to be the radial clearance between the ball and the socket. Full fluid film lubrication may be achieved in these hard/hard bearings provided that the surface finish of the bearing surface and the radial clearance are chosen correctly and maintained. Furthermore, there is a close relation between the predicted contact half width and the predicted lubricating film thickness. Therefore, it is important to analyse the contact mechanics in artificial hip joint replacements. Practical considerations of manufacturing these bearing surfaces have also been discussed.
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Dissertations / Theses on the topic "Total surface bearing"

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Sathasivam, Shivani. "Optimisation of the bearing surface design of total knee replacements." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299200.

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Kruger, Karen Marie. "Computational and experimental biomechanics of total hip wear increase due to femoral head damage." Diss., University of Iowa, 2014. https://ir.uiowa.edu/etd/4669.

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Aseptic loosening due to wear-induced osteolysis remains a leading cause of failure in total hip arthroplasty (THA), particularly in revision cases beyond the second decade of use. Historically, there have been large amounts of variability of wear within individual THA patient cohorts. Evidence indicates that femoral head damage can be a cause of this variability. While femoral head damage as a result of third body particles and subluxation and dislocation events has been well documented, direct quantifiable linkage between femoral head damage and wear acceleration remains to be established. Due to large ranges of observed retrieval damage, wear testing protocols for simulating third body and other damage effects have been subject to a wide range of variability, making it difficult to know where the clinical reality lies. To study the effect of retrieval femoral head damage on total hip implant wear, a damage-feature-based finite element (FE) formulation which allowed for wear prediction due to individual damage features developed. A multi-scale imaging procedure was also developed to globally map and quantify micron-level damage features appearing on retrieval femoral heads. This allowed for wear simulations of damage patterns observed on specific retrieval femoral heads. Retrieval damage was shown to be highly variable among patients, and capable of producing up to order-of-magnitude wear increases when compared to undamaged head wear rates. Damage following dislocation and subsequent closed reduction maneuvers was particularly detrimental, with average wear rate increases equal to half an order of magnitude. These data were used to develop wear testing protocols for simulating clinically-occurring third body and other damage effects.
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Shrestha, Dilesh Raj. "Bearing condition monitoring : An investigation on the possibility of monitoring aging of the lubricating grease by means of acoustic emission and temperature." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-87220.

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Grease is among the most widely used lubricants in rolling element bearings. Proper understanding of the effect of lubrication due to grease aging can provide a significant increase in the life of the engineering systems. However, at present, there is no sufficient understanding of the grease aging effect in rolling elements bearing. This restricts the optimal usage of the bearing and timely monitoring of the grease. The current research work tries to address this issue with an experimental investigation. This project studies the behavior of 4 types of greases in rolling elements bearings for various operating conditions by recording the temperature and acoustic emission data. The aged samples were prepared to keep in the oven at 150 °C for a series of time duration letting it go through the chemical changes and thermal degradation. Tests were carried out in a test rig with the different levels of oxidized greases for 5 hrs time. And the effects in bearing temperature, acoustic emission were recorded. This is an investigation to analyze the effects of grease composition and aging in rolling elements lubrication by means of acoustic emission and bearing temperature. The IR spectroscopy was carried from the samples collected from the oven in order to understand the change in lubricant composition. The results show that the grease with di-urea thickener and base oil of synthetic ether and polyolester gives the best bearing temperature and acoustic emission behavior compared to the other grease type. The possibility of using the acoustic emission and temperature data to monitor the grease aging is also presented. Along with this, the possibility of using the AE statistical methods, AE count method, and energy plot were also explored to relate with the degree of aging.
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Lin, Ssu-Chen, and 林思淳. "Biomechanical effect of Liner on Total Surface Bearing Socket." Thesis, 2004. http://ndltd.ncl.edu.tw/handle/75451693453401192084.

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碩士
國立成功大學
醫學工程研究所碩博士班
92
Many researches indicated that the prosthetics performance could be reflected by the interface stresses distribution between the stump and prosthetic socket. Improper stresses distribution or excessive peak stresses might cause discomfort even necrosis on the stump. Placed between the stump and prosthetic socket, the liner plays a role to distribute the stresses under loading. The properties of the liner, such as the Young’s modulus, coefficient of friction would influence the interface stress, thus the prosthetics performance and the amputee’s wearing comfort. In this study, three-dimensional nonlinear finite element models transtibial prostheses were developed for six subjects respectively to investigate the interface stress variations with different liner material properties for total surface bearing (TSB) socket. 　　Four materials (Soft Pelite, Regular Plastazote, Poron, Silicone) were simulated in this study. The Young’s modulus allocated to these liners was assumed to be linear except for the Silicone material. All the materials were simplified as isotropic and homogeneous except for the soft tissue, which was assumed to be regional homogeneous. The outer surface of liner was fixed to simulate a hard socket boundary condition. Downward displacements at the superior surface of the bone were applied as the loading condition. The downward displacement terminated when the reaction force reached patients’ body weight. 　　The outcome indicated that, with the decreasing of Young’s modulus, the liner would redistribute the stress by deformation, which induced a decreasing in peak interface stresses. However, this would also company with larger sliding distance. But the range of sliding was minimal (less than 2mm in all models); therefore the effect of sliding distance increasing could be neglected. To conclude more compliant liners would benefit interface stress distribution for TSB socket, because they effectively reducing the peak interface stresses. Under the static simulation of this study, the softest liner (0.3MPa) has almost the same advantage with nonlinear liner (0.3 to 1.5MPa). 　　As the coefficient of friction increased (0.2 to 1.0), the magnitude of maximum pressure and sliding distance decreased, as the shear stresses increased. However when the coefficient of friction was larger than 0.6, the decreasing of peak interface pressure and sliding distance were insignificant. Nevertheless, the increasing of shear stress was noticeable in all coefficient of friction range. The dominant effect of coefficient of friction is on shear stress, however, its influence varied on individual subject. To conclude, reducing the coefficient of friction would increase the pressure and sliding, but the increasing is within an acceptable range comparing with the advantages in decreasing the shear stress. Based on the static loading, the suggested coefficient of friction range is between 0.4~0.6.
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Kung-HungLai and 賴昆宏. "Finite Element Analysis and Experimental Evaluation of Total Surface Bearing Transtibial Socket." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/83490504023174640993.

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Hsu-HaoHsieh and 謝旭豪. "The Application of Computer Aided Design in Total Surface Bearing Transtibial Socket." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/83134895533228379003.

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Cavenett, Sally Jane. "The effectiveness of total surface bearing compared to specific surface bearing prosthetic socket design on health outcomes of adults with a trans-tibial amputation: a systematic review." Thesis, 2014. http://hdl.handle.net/2440/91289.

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Background Lower-limb prostheses enable life participation for people with amputation. The aim of this systematic review was to synthesise evidence on the effectiveness of total surface bearing (TSB) compared with specific surface bearing (SSB) prosthesis designs on health outcomes. Inclusion criteria Types of participants Trans-tibial amputees aged 14 years and older utilising a TSB or SSB prosthesis. Types of interventions and comparators The intervention was the TSB and the comparator was the SSB design. Types of studies This review considered all relevant quantitative study designs. Outcomes and outcome measures Outcome measures relating to function and mobility, comfort and pain, quality of life and energy expenditure were considered. Search strategy A three-step search strategy across 13 databases and discipline-specific resources was pursued. Published and unpublished studies in English were considered, from database inception to June 2012. Methodological quality Two independent reviewers, using the Joanna Briggs Institute MAStARI appraisal checklists, undertook critical appraisal. Data collection Data about interventions, populations, study methods and outcomes of significance were extracted using the MAStARI tool from the Joanna Briggs Institute. Data synthesis Quantitative data was pooled in statistical meta-analysis using the Cochrane Review Manager Version 5.2 where possible. Where not possible, findings were presented using narrative and tables. Results This review identified and analysed 28 measures assessing the health domains, presenting mixed findings. Twenty-one measures found no difference between socket designs; four found a significant difference favouring the TSB and three found a significant difference favouring the SSB design. Suspension and interface variation was found. Sub-group analysis assessed TSB with gel interface and SSB with foam interface, to examine interface influence. Four measures found no difference and two measures, walking speed and cadence, found a significant difference favouring the TSB design. Further sub-group analysis assessing the influence of pin suspension with TSB compared to supra-condylar suspension with SSB found significant difference favouring TSB design for walking speed and socket preference outcomes. Conclusions The available evidence on the effectiveness of prosthetic socket designs suggests no clear choice between the TSB and SSB. This may be due to variation in interface and suspension utilised. Interpreting the findings, the TSB was as effective as the SSB design in improving health outcomes relating to function, comfort and quality of life. Implications for Practice In finding that the TSB is as effective as the SSB design in improving health outcomes implies that prescription may depend on clinician knowledge and skill-set, funding availability and patient preference. Prosthetists require the skill-set to deliver the TSB design. TSB prescription involves a gel interface, with additional costs; therefore funding is required to enable this prescription. Implications for Research Additional high quality studies involving a larger sample size, across aetiologies are required. Consistency in measures is critical to facilitate comparison and enhance meta-analysis. Studies on cost-effectiveness of socket designs are required to inform choice from a societal perspective.
Thesis (M.Clin.Sc.) -- University of Adelaide, School of Translational Health Science, 2014
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Wei-ChiaoChuang and 莊惟喬. "Grid-Editing System for Supporting the Design of Rapid Prototyping Total Surface Bearing Transtibial Sockets." Thesis, 2010. http://ndltd.ncl.edu.tw/handle/55700514810190153001.

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碩士
國立成功大學
機械工程學系碩博士班
98
This study developed an easily-used system for designing a transtibial socket that will be fabricated by a rapid prototyping (RP) machine. This proposed system is to improve the quality of uncertainty of plaster-based process of fabricating a transtibial socket. In this study, the concept of total surface bearing (TSB) is employed to obtain stump model of an amputee under appropriate pressure. Using TSB stump model, editing complex surface can be avoided, and the quality of sockets can be improved by the simplified design process. In the plaster-based production process, the plaster stump mold must be destroyed in order to fabricate a prosthetic socket. If a socket should be reproduced, it will be difficult to clearly point out the difference between the previous and the new stump molds. If a proper CAD system can be used, the difficulty of reproducing a socket will easily resolved. Currently, manufacturing RP sockets is not an important issue as a convenient RP service bureau already exits. The lack of an appropriate system for designing transtibial socket is the major barrier. The development of an easily-used transtibial socket design system is required. This thesis proposed a prototype system that used Unified Modeling Language (UML) to define user requirements and system structures. The MFC/C++ together with OpenGL is then employed to develop a windows application. The scanned data of a TSB stump mold can be conveniently imported. Using the concept of grid-editing algorithm, this system is efficient and flexible to modify the point data of a stump CAD model. A transtibial socket can then be easily designed and transferred to an RP machine to manufacture a physical socket. To demonstrate the usability of this proposed system, two case studies including a resin-reinforced RP transtibial socket and an RP stump mold for replacing the plaster mold used in plaster-based method were designed and fabricated for a volunteer amputee. The motion analysis and trial use of the prosthetic sockets verified the applicability of this prototype CAD system. Recruiting more amputees to examine and validate this developing system is being arranged.
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Glaser, Diana Andreeva. "Development and Implementation of Mathematical Modeling, Vibration and Acoustic Emission Technique to Correlate In Vivo Kinematics, Kinetics and Sound in Total Hip Arthroplasty with Different Bearing Surfaces." 2008. http://etd.utk.edu/2008/August2008Dissertations/GlaserDianaAdreeva.pdf.

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Books on the topic "Total surface bearing"

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Jacobs, JJ, and TL Craig, eds. Alternative Bearing Surfaces in Total Joint Replacement. 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959: ASTM International, 1998. http://dx.doi.org/10.1520/stp1346-eb.

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1956-, Jacobs Joshua J., Craig Thomas L. 1947-, and Symposium on Alternative Bearing Surfaces in Total Joint Replacement (1997 : San Diego, Calif.), eds. Alternative bearing surfaces in total joint replacement. West Conshohocken, PA: ASTM [American Society for Testing and Materials], 1998.

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THE ROEHAMPTON TOTAL SURFACE BEARING SELF-SUSPENDING ABOVEKNEE SOCKET.. 1989.

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Book chapters on the topic "Total surface bearing"

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Parr, J. E., W. Haggard, and H. H. Trieu. "Polyethylene as a Bearing Surface." In Interfaces in Total Hip Arthroplasty, 105–12. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0477-3_9.

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Peck, Jeffrey N. "Weight-Bearing Surfaces." In Advances in Small Animal Total Joint Replacement, 31–38. West Sussex, UK: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118704776.ch4.

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Yoo, Jeong Joon, Hee Joong Kim, Young Min Kim, Kang Sup Yoon, Kyung Hoi Koo, Kwang Woo Nam, and Sang Ik Shin. "Revision Total Hip Arthroplasty Performed with a Contemporary Alumina-on-Alumina Bearing Surface; Minimum 5-Year Follow-Up Study." In Bioceramics 18, 1353–56. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-992-x.1353.

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Witvoet, J., R. Nizard, and L. Sedel. "Ceramic on Ceramic Bearing Surfaces." In Interfaces in Total Hip Arthroplasty, 143–50. London: Springer London, 2000. http://dx.doi.org/10.1007/978-1-4471-0477-3_13.

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Duong, Cong-Truyen, Cong-Dat Le, and Duc-Nam Nguyen. "Effect of Surface Roughness on Friction of CoCrMo-on-UHMWPE Bearing in Total Hip Arthroplasty Under Lubrication of Bovine Serum Albumin." In IFMBE Proceedings, 247–51. Singapore: Springer Singapore, 2019. http://dx.doi.org/10.1007/978-981-13-5859-3_45.

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Gu, Jianming. "Bearing Surfaces for Total Hip Arthroplasty." In Principles of Primary Total Hip Arthroplasty, 21–27. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-3606-7_4.

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Nelsen-Freund, Edward M., Joshua J. Jacobs, and William J. Maloney. "Ceramic Bearing Surfaces in Total Hip Arthroplasty." In Arthroplasty 2000, 41–48. Tokyo: Springer Japan, 2001. http://dx.doi.org/10.1007/978-4-431-68427-5_5.

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Durst, Alexander, Kate Spacey, and Wasim S. Khan. "Advances in Bearing Surfaces of Total Hip Arthroplasty." In General Principles of Orthopedics and Trauma, 739–46. Cham: Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-15089-1_37.

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Hernigou, Philippe, Arnaud Dubory, Damien Potage, and Charles Henri Flouzat Lachaniette. "All Osteonecroses Are Not Predictor of Poor Outcome with Cemented Total Hip Arthroplasty: A 30-Year Follow-Up Case Presentation with Bilateral Ceramic on Ceramic Bearing Surface." In Osteonecrosis of the Femoral Head, 217–24. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-50664-7_20.

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Kerboull, L. "Personal Indications of Alumina Against Alumina bearing surfaces in Total Hip Replacement." In Bioceramics in Joint Arthroplasty, 153–56. Heidelberg: Steinkopff, 2003. http://dx.doi.org/10.1007/978-3-642-85763-8_22.

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Conference papers on the topic "Total surface bearing"

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Ansari, Farzana, Jeff Koller, Amelia Swan, Sunny Kung, Stephen B. Gunther, Tom R. Norris, Michael Reis, and Lisa Pruitt. "Macro- and Microscale Analysis of Bearing Surface Damage on Total Shoulder Replacements." In ASME 2013 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/sbc2013-14296.

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Damage to bearing surfaces of total joint replacements (TJR) can have clinical consequences: wear debris generated from ultra-high molecular weight polyethylene (UHMWPE) surfaces can cause osteolysis and subsequent implant loosening [1]. Counterbearing metallic damage may significantly increase UHMWPE wear [2]. Documenting the morphology, frequency and location of bearing surface damage may provide insight into wear initiation and prevention. While scoring methodologies have been available and validated for total hip replacements (THR) and total knee replacements (TKR) [3–4], there is a paucity of validated scoring protocols for total shoulder replacements (TSR) [5]. Our previous work presented a damage scoring methodology to evaluate the severity and coverage of six damage modes on retrieved cobalt chrome (CoCr) humeral heads [6]. In this study, we adapt that protocol to include bearing surface damage on the counter-bearings (UHMWPE glenoid components). Additionally, we incorporate the results of 3D profilometry analysis of scratches in the Co-Cr humeral heads [6]. Ultimately, this macroscale and microscale analysis, combined with clinical data, for coupled TSR retrievals will provide insight on the origin, evolution and consequences of bearing damage in vivo.
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Dharia, Mehul A., Jeff E. Bischoff, Duane Gillard, Fred Wentorf, and Matt Mroczkowski. "Impact of Articulation Geometry on Contact Mechanics in Total Ankle Replacement Design." In ASME 2011 Summer Bioengineering Conference. American Society of Mechanical Engineers, 2011. http://dx.doi.org/10.1115/sbc2011-53107.

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Total ankle replacement designs have evolved since their introduction in the mid 1970s. While the first-generation total ankle replacement (TAR) designs had unacceptably high failure rates, recent designs have demonstrated improved outcomes [1]. Two philosophies are commonly used in TAR design: mobile-bearing and fixed-bearing. Unlike mobile-bearing designs which have two articulating surfaces, fixed-bearing designs have only one articulating surface. While fixed-bearing designs have lower risk of dislocation than mobile-bearing designs, the single articulation feature can produce higher contact stress on the articulating surface, increasing the potential for polyethylene wear [1, 2].
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3

Li, Hongmin, and Minel J. Braun. "The Lubricant Flow Structure and Pressure Generation in a Journal Bearing With Diamond-Knurled Stator Surface." In ASME Turbo Expo 2007: Power for Land, Sea, and Air. ASMEDC, 2007. http://dx.doi.org/10.1115/gt2007-28172.

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Journal bearings are popularly used in turbo machinery. The load carrying capacity and the dynamic behavior, stiffness and damping, of a journal bearing are determined by lubricant and bearing parameters: clearance, and shaft diameter and rotation speed, and surface morphology of the rotor and stator surfaces. It has been found that journal bearings with roughened stator surfaces have better performance. This paper presents a numerical investigation on the flow of lubricant in the knurls, in the fluid film between the rotor and the land of the stator, and the pressure generated on the rotor surface in a knurled journal bearing. Three computational models are developed and compared. The full Navier-Stokes equations are solved with a finite volume algorithm to simulate the fluid flow and the pressure generation. The total forces on the rotor surfaces are correlated to the bearing eccentricity and compared to the forces on the smooth bearing shaft of the same clearance. The effects of knurls on the bearing performance will be analyzed and guidance on further investigations on knurled journal bearing is presented.
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Scott, Marcus L., Alan W. Eberhardt, and Jack E. Lemons. "Wear of Retrieved CoCrMo Articulating Surfaces in Total Hip Arthroplasty." In ASME 1998 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1998. http://dx.doi.org/10.1115/imece1998-0143.

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Abstract Wear particle-induced osteolysis is widely regarded as the leading long-term complication associated with total hip arthroplasty (THA) [1]. The need to reduce or eliminate UHMWPE debris has led to renewed interest in alternatives to the current metal-UHMWPE bearing couple, including a reevaluation of metal-on-metal designs. Previous analyses of both simulator-tested and retrieved metal-on-metal THA articulating components have shown that wear rates tend to decrease with a longer time in situ [2,3]. This phenomenon may result from an initial period of accelerated “run-in” wear, in which there is a partial removal of surface asperities and a correction of implant asphericity. This may lead to enhanced fluid film lubrication at the articulation interface and ultimately reduce long-term wear rates of the bearing components. The objectives of this study were to quantify the wear rates of a series of explanted Sivash metal-on-metal bearing components and to characterize changes in surface geometry configurations in order to better understand the running-in phenomenon associated with metal-on-metal bearing surfaces.
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Dadouche, Azzedine, Martin J. Conlon, Waldemar Dmochowski, Waldemar Koszela, Lidia Galda, and Pawel Pawlus. "Effect of Surface Texturing on the Steady-State Properties and Dynamic Coefficients of a Plain Journal Bearing: Experimental Study." In ASME 2011 Turbo Expo: Turbine Technical Conference and Exposition. ASMEDC, 2011. http://dx.doi.org/10.1115/gt2011-46804.

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The last decade has seen a significant and increased interest in surface texturing technologies esulting in improving the overall tribological properties of mechanical components. Several techniques could be used to modify the surface topography with laser surface texturing becoming most popular recently. In this investigation, rig experiments have been performed on plain and textured-surface journal bearings with an aspect ratio of 1.1 under a variety of loads and speeds. Percussive burnishing (embossing) was used to create the dimples on the internal surfaces of the test bearings. The dimples have a spherical shape with a diameter of 1 mm and a depth of 60 micrometers. Pit-area ratio was in the range 5–20% of the total bearings surfaces. The effects of surface-texturing and dimple density on the bearing steady-state characteristics and dynamic coefficients are analyzed and discussed in this paper.
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6

Otto, Jason K., Thomas D. Brown, and John J. Callaghan. "A Finite Element Model of a Rotating Platform Total Knee Employing a Nonlinear, Dual-Surface-Contact Formulation." In ASME 2000 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2000. http://dx.doi.org/10.1115/imece2000-2582.

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Abstract Mobile bearing total knees avoid the conformity/constraint tradeoff of fixed bearing total knees. However, a recent in vivo fluoroscopic study of the most popular mobile bearing total knee in the U.S. showed that bearing motion failed to occur in half of the patients observed. A nonlinear, multiple-surface contact finite element model of a rotating platform total knee was therefore developed to investigate the interaction at the “mobile” interface (contact between the tibial tray and the polyethylene insert) under physiologically relevant loads (1–4 BW) and rotations (10° endorotation). The data showed that there was a linear relationship between axial load and the torque resisting endorotation. Peak contact stresses were located on the medial and lateral peripheral edges of the polyethylene insert. All relative rotation occurred at the “mobile” interface. The same trends were seen in a complementary experimental study of the same components, suggesting that the finite element model is valid under these loading conditions.
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Hsu, L. H., M. J. Tzeng, and J. T. Chen. "A Simplified Integration System for the Fabrication of Total Surface Bearing Transtibial Socket by Employing Rapid Prototyping Technology." In ASME 2011 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/detc2011-48877.

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This project is to validate the preliminary result of rapid prototyping (RP)-based transtibial socket that was reinforced by wrapping a layer of unsaturated polyester resin. By employing contemporary technologies including a scanner, computer-aided engineering systems, a rapid prototyping machine, together with the expertise of a prosthetist, RP-based prosthetic sockets with a comfortable fit to volunteer amputees can be fabricated. However, the expensive cost and complex procedure of using current commercial scanners and CAD systems will be barriers experienced by clinical professionals. As the existing service bureau infrastructure and cheaper RP technology are easily accessed, fabrication and technology cost barriers will be reduced. The remaining problems include the availability of easily-used CAD systems for designing prosthetic sockets, simple scanner and stump duplicating tool. This study therefore focuses on the integration of simplified systems including a vacuum forming tool, compact scanner and an interface system for designing prosthetic sockets. Although the type of PTB (patella tendon bearing) transtibial socket is widely adopted in plaster-based manual process, TSB (total surface bearing) sockets are more acceptable by amputees. Since the concept of TSB socket should obtain the stump mold of an amputee under appropriate pressure by using a specific stump forming tool, editing complex surfaces can be avoided when using a TSB-based stump model to design a socket. The quality of socket fit is expected to improve by a simplified design process in which an interface system based on grid-editing algorithms is utilized. In addition, cheaper RP technology, such as 3-D printing or droplet binding process, can be alternative means to fabricate RP-based prosthetic sockets. By combining TSB stump mold, simplified design process and a cheaper RP machine, this study proposes a simplified integrating system to manufacture RP stump mold. Using this RP stump mold together with the traditional lamination method of infiltrating resin into cotton layers, the RP-based transtibial sockets will then be fabricated easily. The expected result will demonstrate the feasibility of employing cheaper emerging technologies to assist an unskilled prosthetist who will be able to produce good quality of prosthetic socket.
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Hua, Wei, Bo Liu, Shengkai Yu, Weidong Zhou, and Leonard Gonzaga. "Effects of Surface Roughness on the Fly-Ability of a Thermal Protrusion Air Bearing Slider." In ASME/STLE 2009 International Joint Tribology Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/ijtc2009-15025.

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A femto air bearing slider with thermal protrusion is studied based on three groups of surface roughness. It is observed that the air bearing force and the contact force are proportional to the value of average roughness in the minimum flying height region studied, while the intermolecular force or the electrostatic force is the smallest for the smoothest surfaces when the minimum flying height is above a certain value. As a result, the total force on the slider is the largest on the smoothest surfaces in a certain minimum flying height region. When the minimum flying height is designed in that region, the fly-ability of the slider is maximized.
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Dmochowski, Waldemar M., and Martin N. Webster. "The Effect of Lubricant Viscosity-Temperature Characteristics on the Performance of Plain Journal Bearings." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-64229.

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Experimental and analytical results of bearing friction loss, operating temperature, and oil gap thickness are presented comparing performance characteristics of bearings operating with the different lubricants. The lubricants were blended using a variety of mineral and synthetic base stocks to achieve a range of viscosity-temperature characteristics. The results show that the test bearings running with higher viscosity index (VI) lubricants generated slightly lower bearing surface temperatures than those generated using a low VI lubricant. The high VI lubricant also reduced the total power losses by up to 10%. These gains are achieved with little or no change in the minimum oil film thickness.
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10

Contreras, Cesar E., April E. Parkison, Brooke E. Wilson, R. Michael Meneghini, and Steven R. Anton. "Geometric Effects on Embedded Piezoelectric Energy Harvester in Knee Replacement Bearing." In ASME 2015 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2015. http://dx.doi.org/10.1115/smasis2015-9063.

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Each year in the US, over 700,000 patients receive total knee arthroplasty to restore joint function and improve quality of life. A major challenge during surgery is achieving proper ligamentous balance. Improperly balanced knees can lead to accelerated wear of the articular surfaces, reduced range of motion, and patient discomfort and pain. Currently, surgeons rely heavily on their experience and their interpretation of the “feel” of a balanced knee. The goal of the proposed research is to investigate the use of piezoelectric materials embedded in total knee replacement bearings in order to sense forces in vivo and convert knee loads into usable electrical energy to power the embedded sensor. This paper presents an investigation of the effects of various geometric properties on the performance of piezoelectric transducers embedded into polyethylene knee replacement bearings. This work takes a combined modeling and experimental approach to investigate the effects of the overall bearing geometry as well as placement of the embedded transducers on the performance of the system. A simple cylindrical geometry is chosen to represent the knee bearing in order to isolate various effects. Specifically, the curvature of the upper bearing surface is investigated to determine the effects of different curvature profiles on the voltage output of the embedded transducer. Designs with the smallest diameter of curvature are found to provide increased load transfer to the embedded piezoelectric and larger generated power. Additionally, the radial placement of the embedded piezoelectric device is investigated to determine the performance of the system as the piezoelectric device is translated from the geometric center of the bearing to the outer edge. Results show that optimal performance is obtained for placement near the center of the geometric curved feature. Lastly, the effects of variations in machining and fabrication are investigated and it is found that tight tolerances must be maintained in order to obtain experimental results that can be accurately predicted by the model developed in this work.
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