Titanium alloys in hip arthroplasty
I. V. Zagorodny , A. A. Ilyin , V. N. Karpov , A. M. Nadezhin , S. V. Skvortsova , S. V. Sergeev , A. A. Plushev , N. S. Gavryushenko
N.N. Priorov Journal of Traumatology and Orthopedics ›› 2000, Vol. 7 ›› Issue (2) : 73 -76.
Titanium alloys in hip arthroplasty
Experimental study of thermal-hydrogenous processing influence on the structure, mechanical and tribologic properties of titanium-alloy «ѴТ6» was performed. After processing the firmness of alloy was increased up to 40-42 un. HRC in comparison with 28 un. HRC in hot rolling condition. Friction coefficient of VT6 alloy head on extra high molecular polyethylene was similar to the friction coefficient of Co-Cr-Mo alloy head. Wear of extra high molecular polyethylene in couple with titanium-alloy was 5 times lower than in couple with Co-Cr-Mo alloy. Surface hardening of VT6 alloy by thermal-hydrogenous processing 10 times decreases the wear of bone cement at friction. On the base of experimental study the new cemented hip endoprosthesis «SFEN» was elaborated.
titanium alloys / endoprosthesis / hip joint
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