Generation of physiological parameter sets for hip joint motions and loads during daily life activities for application in wear simulators of the artificial hip joint

Fabry, Christian; Herrmann, S.; Kaehler, Michael; Klinkenberg, E.-D.; Woernle, Christoph; Bader, Rainer

doi:10.1016/j.medengphy.2012.07.014

Cited by 39 publications

(26 citation statements)

References 33 publications

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“…In all other cases (2)(3)(4), loads were applied to the femoral head in multiple directions, according to the transformations published in [28]. The maximum loads in cases 2-4 were adapted to the maximum load in ISO 14242-1 (3 kN), resulting in an assumed patient body mass of 131 kg.…”

Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

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The Divergence of Wear Propagation and Stress at Steep Acetabular Cup Positions Using Ceramic Heads and Sequentially Cross-Linked Polyethylene Liners

Zietz

Fabry

Baum

et al. 2015

The Journal of Arthroplasty

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Section: Finite Element Analysis (Fea)mentioning

confidence: 99%

“…2. Forces applied during FEA using ISO 14242-1 standard test conditions (resulting force = axial force); normal walking, chair down/chair up, going up stairs, according to [28], normalized to a patient weight of 131 kg.…”

Section: Validationmentioning

confidence: 99%

The Divergence of Wear Propagation and Stress at Steep Acetabular Cup Positions Using Ceramic Heads and Sequentially Cross-Linked Polyethylene Liners

Zietz

Fabry

Baum

et al. 2015

The Journal of Arthroplasty

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“…Within this experimental study, idealized load conditions according to the ISO standard [20] were considered which did not represent all aspects of everyday life activities [32]. Further experimental studies should analyze the effect of adverse conditions and an increased number of load cycles on the wear resistance of coated and ion-treated femoral heads.…”

Section: Discussionmentioning

confidence: 99%

Wear Performance of Sequentially Cross-Linked Polyethylene Inserts against Ion-Treated CoCr, TiNbN-Coated CoCr and Al2O3 Ceramic Femoral Heads for Total Hip Replacement

et al. 2015

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Abstract:The aim of the present study was to evaluate the biotribology of current surface modifications on femoral heads in terms of wettability, polyethylene wear and ion-release behavior. Three 36 mm diameter ion-treated CoCr heads and three 36 mm diameter TiNbN-coated CoCr heads were articulated against sequentially cross-linked polyethylene inserts (X3) in a hip joint simulator, according to ISO 14242. Within the scope of the study, the cobalt ion release in the lubricant, as well as contact angles at the bearing surfaces, were investigated and compared to 36 mm alumina ceramic femoral heads over a period of 5 million cycles. The mean volumetric wear rates were 2.15 ± 0.18 mm for the ceramic heads. The TiNbN-coated femoral heads showed a better wettability and a lower ion level in comparison to the ion-treated CoCr heads. Consequently, the low volumes of wear debris, which is comparable to ceramics, and the low concentration of metal ions in the lubrication justifies the use of coated femoral heads.

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“…These profiles were derived from data provided by Fabry et al [22] which was based on the work of Bergmann et al [23,24].…”

Section: Methodsmentioning

confidence: 99%

A link between the tribology and corrosive degradation of metal-on-metal THRs

Beadling

Bryant

Dowson

et al. 2017

Tribology International

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The degradation of Metal-on-Metal (MoM) Total Hip Replacements (THRs) is a complex mix of tribological, corrosive phenomena and their synergistic processes. Previous links between the corrosion of these devices and their sliding conditions over a cycle have been observed in simulator studies instrumented with a three-electrode electrochemical cell. This study further quantifies that link; demonstrating clear repeating periodicity in the anodic current transients of a 28 mm diameter MoM bearing under a standard ISO-14242 walking profile. A simplified 2D model and an expression of the Hamrock-Dowson equation was utilised to estimate the Theoretical Minimum Film Thickness (h min ) over a cycle, which was shown to match closely to the measured anodic current in both shape and magnitude.

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Generation of physiological parameter sets for hip joint motions and loads during daily life activities for application in wear simulators of the artificial hip joint

Cited by 39 publications

References 33 publications

The Divergence of Wear Propagation and Stress at Steep Acetabular Cup Positions Using Ceramic Heads and Sequentially Cross-Linked Polyethylene Liners

The Divergence of Wear Propagation and Stress at Steep Acetabular Cup Positions Using Ceramic Heads and Sequentially Cross-Linked Polyethylene Liners

Wear Performance of Sequentially Cross-Linked Polyethylene Inserts against Ion-Treated CoCr, TiNbN-Coated CoCr and Al2O3 Ceramic Femoral Heads for Total Hip Replacement

A link between the tribology and corrosive degradation of metal-on-metal THRs

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