Phase transformation of a new generation yttria-stabilized zirconia femoral head after total hip arthroplasty

被引:8
|
作者
Hayaishi, Yasuhisa [2 ]
Miki, Hidenobu [3 ]
Yoshikawa, Hideki [1 ]
Sugano, Nobuhiko [1 ]
机构
[1] Osaka Univ, Grad Sch Med, Dept Orthopaed Surg, Suita, Osaka 5650871, Japan
[2] Gracia Hosp, Dept Orthoped Surg, Mino 5628567, Japan
[3] Osaka Natl Hosp, Dept Orthoped Surg, Chuo Ku, Osaka 5400006, Japan
关键词
Ceramic head; Phase transformation; Polyethylene wear; Total hip arthroplasty; Zirconia;
D O I
10.1007/s10165-008-0108-2
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
We examined a new-generation yttria-stabilized zirconia head manufactured by NGK 1 year after total hip arthroplasty. Monoclinic content of the retrieved head was twice that of the unused head at the pole and equator. A fourfold increase in monoclinic content was observed at 5 mm below the equator. Transformation from the tetragonal phase to the monoclinic phase occurred in the new generation zirconia with alumina doping within a relatively short period in vivo.
引用
收藏
页码:647 / 650
页数:4
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