In vivo wear performance of highly cross-linked polyethylene vs. yttria stabilized zirconia and alumina stabilized zirconia at a mean seven-year follow-up

Abstract

BackgroundZirconia was introduced as an alternative to alumina for use in the femoral head. The yttria stabilized zirconia material was improved by adding alumina. We evaluated highly cross-linked polyethylene wear performance of zirconia in total hip arthroplasty. The hypothesis was that alumina stabilized zirconia could decrease highly cross-linked polyethylene wear.MethodsHighly cross-linked polyethylene wear was measured with a computerized method (PolyWare) in 91 hips. The steady-state wear rates were measured based on the radiographs from the first year postoperatively to the final follow-up and were compared between hips with yttria stabilized zirconia and alumina stabilized zirconia.ResultsThe steady-state wear rate of highly cross-linked polyethylene against zirconia was 0.02 mm/year at a mean follow-up of 7 years. No significant difference was observed between groups with yttria stabilized zirconia and alumina stabilized zirconia.ConclusionsAddition of alumina to the zirconia material failed to show further reduction of highly cross-linked polyethylene wear and our hypothesis was not verified.

Minimum 10-Year Wear Analysis of Highly Cross-Linked Polyethylene in Cementless Total Hip Arthroplasty

“…Yttria-stabilized zirconia undergoes phase transformation in vivo [13,20], and was reported to cause increased wear of conventional polyethylene [25,26]. We expected a reduction in polyethylene wear when we used the alumina-stabilized zirconia heads, but this was not significant in this study.…”

“…The wear rates revealed in this study and other studies are similar. In particular, Hasegawa and Sudo [13] analyzed 91 hips of the Q hip system, in which the same highly cross-linked polyethylene and 26-mm zirconia heads were used, and reported a similar steady-state wear rate (0.02 mm/year).…”

“…The week. The average follow-up period was 11.9 years (range, [10][11][12][13][14]. Bedding-in and steady-state linear wear rates were calculated for each hip (Fig.…”

Fabrication, Properties and Applications of Dense Hydroxyapatite: A Review

“…In addition to advanced densification technologies, there are other processing routes, such as the incorporation of reinforcing agents in different forms, such as whiskers, fibers and platelets [ 236 , 250 , 251 , 252 , 253 , 254 , 255 ]. Various reports [ 256 ] on the alumina (Al 2 O 3 ) and titania (TiO 2 ) composites with HAp have been done.…”

Comparison of polyethylene wear of vitamin E-diffused and MPC-grafted highly cross-linked polyethylene in total hip arthroplasty

“…Previous studies reported that the steady-state wear rate of annealed HXLPE (Excellink; Kyocera) was 0.017 to 0.02 mm/year at 7 to 13-year. [15][16][17] The steady-state wear rate of remelted HXLPE in previous studies was 0 to 0.042 mm/year at 11 to 15-year (Longevity;…”