The effects of presence of a backside screw hole on biotribological behavior of phospholipid polymer-grafted crosslinked polyethylene

被引:1
|
作者
Watanabe, Kenichi [1 ,2 ]
Moro, Toru [2 ,3 ]
Kyomoto, Masayuki [1 ,2 ,4 ]
Saiga, Kenichi [1 ,2 ]
Taketomi, Shuji [3 ]
Kadono, Yuho [5 ]
Takatori, Yoshio [2 ]
Tanaka, Sakae [3 ]
Ishihara, Kazuhiko [4 ]
机构
[1] KYOCERA Med Corp, Res Dept, Yodogawa Ku, 3-3-31 Miyahara, Osaka 5320003, Japan
[2] Univ Tokyo, Grad Sch Med, Div Sci Joint Reconstruct, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138655, Japan
[3] Univ Tokyo, Sensory & Motor Syst Med, Fac Med, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138655, Japan
[4] Univ Tokyo, Sch Engn, Dept Mat Engn, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan
[5] Saitama Med Univ, Dept Orthopaed Surg, Sch Med, 38 Morohongo, Moroyama, Saitama 3500495, Japan
关键词
polyethylene; wear; creep; arthroplasty; joint replacement; WEAR-RESISTANCE; ACETABULAR COMPONENT; SIMULATION; CREEP; DEFORMATION; LUBRICATION; IMPINGEMENT; REPLACEMENT; HYDRATION; FRICTION;
D O I
10.1002/jbm.b.33837
中图分类号
R318 [生物医学工程];
学科分类号
0831 ;
摘要
One of the important factors in determining the success of joint replacement is the wear performance of polyethylene. Although highly crosslinked polyethylene (CLPE) is presently used, it is still not adequate. We have developed a surface modification technology using poly(2-methacryloylox-yethyl phosphorylcholine) (PMPC) in an attempt to improve wear performance. In this study, we evaluated the wear and creep deformation resistances of 3-mm and 6-mm thick PMPC-grafted CLPE disks, set on a metal back-plate, with and without a sham screw hole. The gravimetric wear and volumetric change of the disks were examined using a multidirectional pin-on-disk tester. PMPC grafting decreased the gravimetric wear of CLPE regardless of the presence of a screw hole, and did not affect the volumetric change. The volumetric change in the bearing and backside surfaces of the 3-mm thick disk with a screw hole was much larger than that of those without a screw hole or those of the 6-mm thick disk, which was caused by creep deformation. PMPC grafting on the bearing surface can be a material engineering approach to reduce the wear without changing the creep deformation resistance, and is a promising surface modification technology that can be used to increase the longevity of various artificial joints. (c) 2017 Wiley Periodicals, Inc.
引用
收藏
页码:610 / 618
页数:9
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