Reduced Wear With Oxidized Zirconium Femoral Heads

Good, Victoria; Ries, Michael D.; Barrack, Robert L.; Widding, K.; Hunter, George; Heuer, D.

doi:10.2106/00004623-200300004-00013

Cited by 151 publications

(102 citation statements)

References 8 publications

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“…In vitro studies have found oxidized zirconium to have undetectable wear rates when articulating against highly cross-linked polyethylene [6]. More importantly, when using roughened femoral heads oxidized zirconium produced 61% less polyethylene wear compared to CoCr [6]. We did not find a substantially reduced wear rate with our bearing couple compared to reports of CoCr and highly cross-linked polyethylene, which may be a consequence of the short followup.…”

Section: Discussioncontrasting

confidence: 61%

“…It will be important to follow these cohorts to assess if the polyethylene wear rates remain low. In vitro studies have found oxidized zirconium to have undetectable wear rates when articulating against highly cross-linked polyethylene [6]. More importantly, when using roughened femoral heads oxidized zirconium produced 61% less polyethylene wear compared to CoCr [6].…”

Section: Discussionmentioning

confidence: 99%

“…In vitro and in vivo data have helped address these concerns. Oxidized zirconium and cobalt-chrome articulating with standard and cross-linked polyethylene were evaluated in smooth and roughened conditions in vitro [6]. The roughened conditions were artificially created via a technique previously described to create clinically relevant abrasions [9].…”

Section: Discussionmentioning

confidence: 99%

“…We have found no major risks beyond what would be expected with the use of a CoCr femoral head. With in vitro data reporting such dramatic reductions in wear [6], we believe continued study, including careful monitoring of these alternative bearings, is necessary to determine if wear is reduced in the younger, active patient population.…”

Section: Discussionmentioning

confidence: 99%

“…Oxidized zirconium is produced by heating the zirconium alloy in air to greater than 5008C. Thermal oxidation occurs, transforming the metal alloy at the surface to a 5-lm-thick ceramic (zirconia) [6]. Oxidized zirconium femoral heads articulating with highly cross-linked polyethylene have undetectable wear rates in hip simulators [6].…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Wear Analysis in THA Utilizing Oxidized Zirconium and Crosslinked Polyethylene

Garvin¹,

Hartman²,

Mangla³

et al. 2009

Clinical Orthopaedics &Amp; Related Research

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Oxidized zirconium, a material with a ceramic surface on a metal substrate, and highly cross-linked polyethylene are two materials developed to reduce wear. We measured in vivo femoral head penetration in patients with these advanced bearings. We hypothesized the linear wear rates would be lower than those published for cobaltchrome and standard polyethylene. We retrospectively reviewed a select series of 56 THAs in a relatively young, active patient population utilizing oxidized zirconium femoral heads and highly cross-linked polyethylene acetabular liners. Femoral head penetration was determined using the Martell computerized edge-detection method. All patients were available for 2-year clinical and radiographic followup. True linear wear was 4 lm/year (95% confidence intervals, ± 59 lm/year). The early wear rates in this cohort of relatively young, active patients were low and we believe justify the continued study of these alternative bearing surfaces.

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Section: Discussioncontrasting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Wear Analysis in THA Utilizing Oxidized Zirconium and Crosslinked Polyethylene

Garvin¹,

Hartman²,

Mangla³

et al. 2009

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

show abstract

Zirconium Alloys for Orthopaedic and Dental Applications

Mehjabeen

Song

et al. 2018

Adv Eng Mater

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Viscosity effects in the photopolymerization of two‐monomer systems

Marcinkowska

Andrzejewska

2009

J of Applied Polymer Sci

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Photopolymerization kinetics and viscosity behavior of five different two-monomer systems forming hydrogen bonds and composed of mixtures of a high viscosity monomer (HVM) and a low viscosity monomer (LVM) at various molar ratios were investigated at six polymerization temperatures. The monomers used were mono-or dimethacrylates. Detailed viscosity measurements of the monomer mixtures showed significant negative deviations from the theoretical values (characterized by excess logarithm viscosities) indicating that interactions between the molecules of the same type (in individual monomers) are stronger than those between two molecules of different types (HVM and LVM). The photopolymerization kinetics were analyzed from the point of view of the appearance, viscosity and temperature behavior of the most reactive composition (MRC), the one showing the highest value of the maximum polymerization rate within a range of the HVM: LVM ratios. It was found that MRC appearance is determined mainly by the initial viscosity of the twomonomer system, whereas the functionality of the monomers (and network formation) is much less important (MRC is observed even in linear systems). The initial viscosity of all the monomer mixtures showing MRC lay in the range of 0.06-2 Pa s, which is narrow compared to the range of viscosities of the monomers (approximately 10 À3-10 3 Pa s).

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Reduced Wear With Oxidized Zirconium Femoral Heads

Cited by 151 publications

References 8 publications

Wear Analysis in THA Utilizing Oxidized Zirconium and Crosslinked Polyethylene

Wear Analysis in THA Utilizing Oxidized Zirconium and Crosslinked Polyethylene

Zirconium Alloys for Orthopaedic and Dental Applications

Viscosity effects in the photopolymerization of two‐monomer systems

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