Examination of surface and material properties of explanted zirconia femoral heads

Santos, Elza Maria Carneiro Mendes Ferreira dos; Vohra, Shikhar; Catledge, Shane A.; McClenny, Michelle D.; Lemons, Jack E.; Moore, Kevin D.

doi:10.1016/j.arth.2004.06.017

Cited by 74 publications

(16 citation statements)

References 9 publications

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“…At this rate, the researchers concluded that the performance of ceramic-polyethylene wear couples should be unaffected for the lifetime of most patients. Yet, retrievals as well as in vitro studies showed considerable changes in surface finish in some particular heads [77,453]. The apparent contradiction in performance between in vitro and in vivo Y-TZP femoral heads was likely due to higher in vivo stresses which were not addressed nor replicated in the laboratory studies and to variations in the processes from one producer to another, and even from batch to batch.…”

Section: Hydrothermal Stabilitymentioning

confidence: 83%

“…This effect has become known as low-temperature hydrothermal degradation (LTD) [76]. The transformation results in increased implant surface roughness, enhanced wear, weakening of the material, and eventual fracture [72][73][74]77,78]. Despite its withdrawal from EU and US markets, Y-TZP femoral heads are still available for implantation in Asia, and recent physical chemistry analyses suggest that the unconstrained transformation experienced by the original EU manufacturer may be limited and controlled through improved processing and careful assessment before clinical use [79].…”

Section: Zirconiamentioning

confidence: 99%

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Ceramics and ceramic coatings in orthopaedics

McEntire

Bal

Rahaman

et al. 2015

Journal of the European Ceramic Society

169

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Section: Hydrothermal Stabilitymentioning

confidence: 83%

Section: Zirconiamentioning

confidence: 99%

Ceramics and ceramic coatings in orthopaedics

McEntire

Bal

Rahaman

et al. 2015

Journal of the European Ceramic Society

169

View full text Add to dashboard Cite

“…When phase transformation occurs at the head-trunnion interface, it can initiate fracture (Clarke et al, 2003). Additionally, the effects of the phase transformation toughening mechanism become unusable for prevention of crack propagation as the tetragonal phase becomes consumed by hydrothermal degradation (Santos et al, 2004). …”

Section: Composition and Properties Of Ztamentioning

confidence: 99%

Advances in zirconia toughened alumina biomaterials for total joint replacement

Kurtz

Kocagöz

Arnholt

et al. 2014

Journal of the Mechanical Behavior of Biomedical Materials

209

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The objective of this article is to provide an up-to-date overview of zirconia-toughened alumina (ZTA) components used in total hip arthroplasties. The structure, mechanical properties, and available data regarding the clinical performance of ZTA are summarized. The advancements that have been made in understanding the in vivo performance of ZTA are investigated. This article concludes with a discussion of gaps in the literature related to ceramic biomaterials and avenues for future research.

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“…However, with zirconia ceramic, the potential exists for late phase transformation and aging, resulting in grain pullout, surface cracking, and increasing surface roughness [4,8,23,28]. Zirconia ceramic has three phases of physical structure.…”

Section: Introductionmentioning

confidence: 99%

Similar Wear in Total Hip Arthroplasties with Metallic or Zirconia Femoral Heads

2008

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Ceramic femoral heads have been used in an attempt at reducing polyethylene wear of total hip arthroplasties. Clinical results with zirconia femoral heads have been mixed. This study was undertaken to compare the polyethylene wear and incidence of periprosthetic osteolysis in total hip replacements performed using a 28-mm zirconia versus a 28-mm cobalt chromium femoral head. Thirty-five hips with a 28-mm cobalt chromium head and 68 hips with a 28-mm zirconia head were evaluated after a minimum follow-up of 2 years (average, 4.0 years; range, 2.0 to 9.1 years). A monoblock acetabular component was used in all patients. Polyethylene wear was measured in serial radiographs from 58 of the hips utilizing a computerassisted vector wear technique. Periacetabular osteolysis developed in three patients (two with a zirconia head and one with a cobalt chromium head). The total wear and the annual wear rate were 0.48 mm and 0.11 mm/year for the cobalt chromium heads and 0.53 mm and 0.14 mm/year for the zirconia heads, respectively. We found no benefit with respect to the rate of polyethylene wear or incidence of osteolysis with the use of zirconia femoral heads.

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Examination of surface and material properties of explanted zirconia femoral heads

Cited by 74 publications

References 9 publications

Ceramics and ceramic coatings in orthopaedics

Ceramics and ceramic coatings in orthopaedics

Advances in zirconia toughened alumina biomaterials for total joint replacement

Similar Wear in Total Hip Arthroplasties with Metallic or Zirconia Femoral Heads

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