Quantifying the bearing surface wear of retrieved hip replacements
作者机构：Division of Surgery&Interventional ScienceInstitute of Orthopaedics and Musculoskeletal ScienceUniversity College London and the Royal National Orthopaedic HospitalStanmoreUK
出 版 物：《Biosurface and Biotribology》 (生物表面与生物摩擦学（英文）)
年 卷 期：2019年第5卷第1期
页 面：28-33页
核心收录：
学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）]
主 题：wear surface meaningful
摘 要：Accurate quantification of bearing material loss from retrieved metal-on-metal(MOM)hip replacements is key to understanding their *** methods are currently the only means of estimating volumetric wear from retrieved implants and numerous contrasting approaches to obtain these measures have been *** collection strategies have been thoroughly discussed and refined to minimise the effect of error incurring factors;however,there is an opportunity to optimise the current methods of estimating the pre-wear geometry and,therefore,improve the accuracy of wear volume *** automated analysis strategy to quantify volumetric wear is proposed in this study,which utilises the entire bearing surface to determine the implants pristine *** involves the iterative removal of geometrically effected data points to optimise the fit and size of a perfect *** fitted,this reference geometry is compared with the measured data,in its entirety,to calculate the volume change representative of the quantity of material *** the reliability of this parameter could influence the care of a million patients that remain with MOM hip *** validation of this method will dominate future work,ensuring that the accuracy and reliability of this approach are sufficient to provide clinically meaningful data.
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