Variation in taper surface roughness for a single design effects the wear rate in total hip arthroplasty
Variation in taper surface roughness for a single design effects the wear rate in total hip arthroplasty
复制标题
单一设计锥面粗糙度的变化会影响全髋关节置换术的磨损率
DOI：
10.1002/jor.23456
复制
发表时间：
2017
影响因子：
2.8
通讯作者：
A. Hart
中科院分区：
文献类型：
--
作者：
R. Whittaker;H. Hothi;A. Eskelinen;G. Blunn;J. Skinner;A. Hart
全髋关节置换术（THA）头干锥度连接处的材料损失与金属碎片（ARMD）的不良反应有关；其机制是多方面的。我们研究了“加工后”锥度表面的粗糙度与该接合处的磨损率之间的关系。50个检索到的Pinnacle金属对金属（MOM）轴承与Corail杆配对包括在研究中。在控制了其他手术、植入物和患者因素后，进行多变量统计分析以确定锥度粗糙度对材料损失率的影响。“成品”头锥度表面的表面粗糙度与该表面的材料损失率有关。取自ISO 4287和ISO 13565‐2的18个粗糙度变量中有4个是显著的：降低峰高（Rpk，核心上方突出的峰）（p = 0.004），材料比1 （Mr1，核心上方突出的峰的比例）（p = 0.002），峰区面积（A1，雅培曲线包含轮廓中的峰的面积）（p = 0.003）和偏度（Rsk，与表面特征的高度或深度相对应的高度分布的不对称性）（p = 0.03）。我们发现测量值的中位数（范围）分别为0.50（0.05-2.98）、11.98（0.46-39.98）、30.89（0.15-581.00）和0.04(- 0.73-0.84)，差异很大。Rpk每增加1个单位，锥度磨损率就会增加73%。“成品”表面粗糙度的可变性对锥度材料损失有重要影响。©2016骨科研究学会。Wiley期刊公司出版。[J]中华口腔医学杂志，2017,35(5):784 - 792。
Material loss from the head‐stem taper junction of total hip arthroplasty (THA) is implicated in adverse reactions to metal debris (ARMD); the mechanisms for this are multi‐factorial. We investigated the relationship between the roughness of the “as manufactured” taper surface and the wear rate from this junction. Fifty retrieved Pinnacle metal‐on‐metal (MOM) bearings paired with a Corail stem were included in the study. Multivariable statistical analysis was performed to determine the influence of taper roughness on material loss rate after controlling for other confounding surgical, implant, and patient factors. The surface roughness of the “as manufactured” head taper surface was associated with the rate of material loss from this surface. Four of eighteen roughness variables taken from ISO 4,287 and ISO 13,565‐2 were significant: The Reduced Peak Height (Rpk, the protruding peaks above the core) (p = 0.004), Material Ratio 1 (Mr1, the ratio of the protruding peaks above the core) (p = 0.002), Area of the Peak Region (A1, the area of the Abbott‐Curve that contains the peaks from the profile) (p = 0.003) and the Skewness (Rsk, the asymmetry of the height distribution corresponding to the height or depth of surface features) (p = 0.03). We found a large variability in the measured values with a median (range) of 0.50 (0.05–2.98), 11.98 (0.46–39.98), 30.89 (0.15–581.00), and 0.04 (−0.73–0.84), respectively. A 1‐unit increase in Rpk was associated with a 73% increase in the taper wear rate. The variability of “as manufactured” surface roughness has a significant effect on taper material loss. © 2016 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. J Orthop Res 35:1784–1792, 2017.
影响因子：
5
作者：
Bills, P. J.;Racasan, R.;Blunt, L.
通讯作者：
Blunt, L.