The influence of implant position on the wear of alumina-on-alumina studied in a hip simulator

Affatato, Saverio; Bersaglia, G.; Foltran, Ismaela; Emiliani, D.; Traina, Francesco; Toni, Aldo

doi:10.1016/s0043-1648(03)00455-1

Cited by 30 publications

(26 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A correct cup inclination is fundamental. 6,37,44,45 A too vertical position tends to increase the acetabular cup wear. Consequently, edge contacts may occur between the ball and the cup with a considerable increase in stress concentration on the cup edge and the following detachment of ceramic grains leading to a catastrophic wearing of the coupling.…”

Section: Discussionmentioning

confidence: 99%

Severe damage of alumina-on-alumina hip implants: Wear assessments at a microscopic level

Affatato

Taddei

Carmignato

et al. 2012

Journal of the European Ceramic Society

View full text Add to dashboard Cite

Section: Discussionmentioning

confidence: 99%

Severe damage of alumina-on-alumina hip implants: Wear assessments at a microscopic level

Affatato

Taddei

Carmignato

et al. 2012

Journal of the European Ceramic Society

View full text Add to dashboard Cite

“…Recently published wear simulator studies performing edge load at MoP [22,98-100], CoP [101], CoC [98,102] and MoM [103] bearings are available in the literature. All of these studies used steep cup positions to achieve edge loading at the rim of the liner, disregarding microseparation effects (TABLE 4).…”

Section: Edge Loading Testing During Steep Cup Positionmentioning

confidence: 99%

Wear testing of total hip replacements under severe conditions

Zietz

Fabry

Reinders

et al. 2015

Expert Review of Medical Devices

View full text Add to dashboard Cite

Controlled wear testing of total hip replacements in hip joint simulators is a well-established and powerful method, giving an extensive prediction of the long-term clinical performance. To understand the wear behavior of a bearing and its limits under in vivo conditions, testing scenarios should be designed as physiologically as possible. Currently, the ISO standard protocol 14242 is the most common preclinical testing procedure for total hip replacements, based on a simplified gait cycle for normal walking conditions. However, in recent years, wear patterns have increasingly been observed on retrievals that cannot be replicated by the current standard. The purpose of this study is to review the severe testing conditions that enable the generation of clinically relevant wear rates and phenomena. These conditions include changes in loading and activity, third-body wear, surface topography, edge wear and the role of aging of the bearing materials.

show abstract

“…Patient variables include age, sex, weight, general health and activity level. Multiple assessments of wear over time are more valuable than a single measurement and comparing rates of linear penetration after different durations of implantation may be difficult (Affatato et al, 2004;Manning et al, 2005). operative technique, biomechanical considerations, initial and long-term implant fixation) (Braunstein et al, 2009;Clarke and Manley, 2008).…”

Section: 4mentioning

confidence: 99%