Effect of femoral head surface roughness on the wear of ultrahigh molecular weight polyethylene acetabular cups

Wang, A.; Polineni, V.K.; Stark, C.; Dumbleton, J. H.

doi:10.1016/s0883-5403(98)80002-8

Cited by 103 publications

(70 citation statements)

References 12 publications

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“…Against polished counterfaces, the wear factors produced by the RandomPOD for conventional UHMWPE were significantly higher [2,3]. In hip joint simulator studies, linear relationships between k and Ra were observed for conventional UHMWPE [9,13], which is in agreement with the finding of the present study.…”

Section: Discussionsupporting

confidence: 92%

“…Crosslinking of UHMWPE by high-dose irradiation and elimination of concomitant free radicals by various methods, including thermal treatments, has been shown to increase the clinical wear resistance significantly [11,12]. However, not only conventional but also crosslinked UHMWPEs may show substantial wear against rough counterfaces [13][14][15][16][17][18]. The principal motivation for the present study was to learn how roughening affects the wear of conventional and highly crosslinked UHMWPEs in the non-cyclic hip and knee wear simulation in comparison with earlier cyclic wear studies.…”

Section: Introductionmentioning

confidence: 99%

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Effect of CoCr Counterface Roughness on the Wear of UHMWPE in the Noncyclic RandomPOD Simulation

Saikko

Vuorinen

Revitzer

2016

Journal of Tribology

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Section: Discussionsupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%

Effect of CoCr Counterface Roughness on the Wear of UHMWPE in the Noncyclic RandomPOD Simulation

Saikko

Vuorinen

Revitzer

2016

Journal of Tribology

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“…Therefore, increasing wear resistance of the PE for acetabular cups has been a major target. This can be achieved by increasing the crosslink density of the PE [41]. A wear simulator study suggested wear reduction of moderately cross-linked PE over historical PE is between 32% and 45% by volumetric wear rates [15].…”

Section: Introductionmentioning

confidence: 99%

Cross-linked Compared with Historical Polyethylene in THA: An 8-year Clinical Study

Geerdink

Grimm

Vencken

et al. 2008

Clin Orthop Relat Res

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Wear particle-induced osteolysis is a major cause of aseptic loosening in THA. Increasing wear resistance of polyethylene (PE) occurs by increasing the crosslink density and early reports document low wear rates with such implants. To confirm longer-term reductions in wear we compared cross-linked polyethylene (irradiation in nitrogen, annealing) with historical polyethylene (irradiation in air) in a prospective, randomized clinical study involving 48 patients who underwent THAs with a minimum followup of 7 years (mean, 8 years; range, 7-9 years). The insert material was the only variable. The Harris hip score, radiographic signs of osteolysis, and polyethylene wear were recorded annually. Twenty-three historical and 17 moderately cross-linked polyethylene inserts were analyzed (five patients died, three were lost to followup). At 8 years, the wear rate was lower for crosslinked polyethylene (0.088 ± 0.03 mm/year) than for the historical polyethylene (0.142 ± 0.07 mm/year). This reduction (38%) did not diminish with time (33% at 5 years). Acetabular cyst formation was less frequent (39% versus 12%), affected fewer DeLee and Charnley zones (17% versus 4%), and was less severe for the cross-linked polyethylene. The only revision was for an aseptically loose cup in the historical polyethylene group. Moderately cross-linked polyethylene maintained its wear advantage with time and produced less osteolysis, showing no signs of aging at mid-term followup.

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“…Other protocols have placed third body particles directly in the articulating surface (Davidson et al, 1994;McKellop et al, 1981;McKellop and Rostlund, 1990;McNie et al, 2000), or have indirectly simulated third body effects using abrasion-tumbling, emery abrasion, or discrete scratching of femoral heads (Affatato et al, 2005;Barbour et al, 2000;Endo et al, 2001;McKellop et al, 1999;Wang et al, 1998); many of these studies also demonstrated increased polyethylene wear resulting from third body effects.…”

Section: Introductionmentioning

confidence: 99%

Effects of episodic subluxation events on third body ingress and embedment in the THA bearing surface

Heiner

Baer

Pedersen

et al. 2008

Journal of Biomechanics

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In total joint arthroplasty, third body particle access to the articulating surfaces results in accelerated wear. Hip joint subluxation is an under-recognized means by which third body particles could potentially enter the otherwise closely conforming articular bearing space. The present study was designed to test the hypothesis that, other factors being equal, even occasional events of femoral head subluxation greatly increase the number of third body particles that enter the bearing space and become embedded in the acetabular liner, as compared to level walking cycles alone. Ten metal-onpolyethylene hip joint head-liner pairs were tested in a multi-axis joint motion simulator, with CoCrMo third body particles added to the synovial fluid analog. All component pairs were tested for two hours of level walking; half also were subjected to twenty intermittent subluxation events. The number and location of embedded particles on the acetabular liners were then determined. Subluxation dramatically increased the number of third body particles embedded in the acetabular liners, and it considerably increased the amount of scratch damage on the femoral heads. Since both third body particles and subluxation frequently occur in contemporary total hip arthroplasty, their potent synergy needs to be factored prominently into strategies to minimize wear.

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Effect of femoral head surface roughness on the wear of ultrahigh molecular weight polyethylene acetabular cups

Cited by 103 publications

References 12 publications

Effect of CoCr Counterface Roughness on the Wear of UHMWPE in the Noncyclic RandomPOD Simulation

Effect of CoCr Counterface Roughness on the Wear of UHMWPE in the Noncyclic RandomPOD Simulation

Cross-linked Compared with Historical Polyethylene in THA: An 8-year Clinical Study

Effects of episodic subluxation events on third body ingress and embedment in the THA bearing surface

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