Wear Performance of Ultra-High Molecular Weight Polyethylene on Oxidized Zirconium Total Knee Femoral Components

Spector, Myron; Ries, Michael D.; Bourne, Robert B.; Sauer, Willard S.; Long, Marc; Hunter, George

doi:10.2106/00004623-200100022-00004

Cited by 138 publications

(76 citation statements)

References 4 publications

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“…Many authors reported reduction in polyethylene wear rates in a knee wear simulator of 42% to 89% in knees with an OxZr femoral component compared with knees with a Co-Cr femoral component [9,29,30,34] (Table 7). Kobayashi et al [16] observed there was no correlation between the presence or absence of osteolysis and the morphologic features of the particles present.…”

Section: Discussionmentioning

confidence: 99%

“…This finding suggests the numbers of polyethylene wear particles generated in TKAs with the OxZr femoral component were not reduced in vivo in contrast to the findings in a knee simulator. The findings from polyethylene wear particle analysis in two studies [26,30] suggested OxZr produces submicrometer particles equivalent in size to those produced by Co-Cr but fewer in number (Table 8). In our in vivo study, there were no differences in the mean size or the number of submicrometer particles between the OxZr femoral component and Co-Cr femoral component.…”

Section: Discussionmentioning

confidence: 99%

“…The resulting material (oxidized zirconium or OxZr) of total knee prostheses maintains the strength of the metal zirconium core yet provides the benefit of a ceramic articulating surface. Preliminary studies of this material using wear machines have reported reduction in polyethylene wear rates of 42% to 89% compared with cobaltchrome (Co-Cr) [9,11,30]. It also has been reported there was a more rapid return of flexion and regaining functional milestones in the group of patients with OxZr femoral knee components [18,19].…”

Section: Introductionmentioning

confidence: 97%

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Weight of Polyethylene Wear Particles is Similar in TKAs with Oxidized Zirconium and Cobalt-chrome Prostheses

Kim

Huh

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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Background The greater lubricity and resistance to scratching of oxidized zirconium femoral components are expected to result in less polyethylene wear than cobaltchrome femoral components. Questions/purposes We examined polyethylene wear particles in synovial fluid and compared the weight, size (equivalent circle diameter), and shape (aspect ratio) of polyethylene wear particles in knees with an oxidized zirconium femoral component with those in knees with a cobalt-chrome femoral component. Patients and Methods One hundred patients received an oxidized zirconium femoral component in one knee and a cobalt-chrome femoral component in the other. There were 73 women and 27 men with a mean age of 55.6 years (range, 44-60 years). The minimum followup was 5 years (mean, 5.5 years; range, 5-6 years). Polyethylene wear particles were analyzed using thermogravimetric methods and scanning electron microscopy. Results The weight of polyethylene wear particles produced at the bearing surface was 0.0223 ± 0.0054 g in 1 g synovial fluid in patients with an oxidized zirconium femoral component and 0.0228 ± 0.0062 g in patients with a cobalt-chrome femoral component. Size and shape of polyethylene wear particles were 0.59 ± 0.05 lm and 1.21 ± 0.24, respectively, in the patients with an oxidized zirconium femoral component and 0.52 ± 0.03 lm and 1.27 ± 0.31, respectively, in the patients with a cobaltchrome femoral component. Knee Society knee and function scores, radiographic results, and complication rate were similar between the knees with an oxidized zirconium and cobalt-chrome femoral component. Conclusions The weight, size, and shape of polyethylene wear particles were similar in the knees with an oxidized zirconium and a cobalt-chrome femoral component. We found the theoretical advantages of this surface did not provide the actual advantage. Level of Evidence Level I, therapeutic study. See the guidelines for Authors for a complete description of levels of evidence.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

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Weight of Polyethylene Wear Particles is Similar in TKAs with Oxidized Zirconium and Cobalt-chrome Prostheses

Kim

Huh

et al. 2010

Clinical Orthopaedics &Amp; Related Research

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“…Furthermore, due to the advantages of ceramic bearing surfaces in terms of superior lubrication, friction, and wear properties the surfaces in total joint arthroplasty, compared to cobalt-chrome alloy (CoCr) are well recognized in studies. These prosthesis with the ceramic femoral components can be more useful in younger patient and those affected by allergies to metallic ions (Stellite) [26][27][28][29].…”

Section: High Flexion Knee and New Materialsmentioning

confidence: 99%

“…In total hip and total knee arthroplasty clinical studies [26,30] demonstrated that ceramic bearings are associated with fewer wear particles that incite a less intense inflammatory host immune response than the metal-on-polyethylene articulations.…”

Section: High Flexion Knee and New Materialsmentioning

confidence: 99%

Evolution in Knee Replacement Implant

Comitini¹

2015

Single Cell Biol

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Major joint arthroplasty is undoubtedly one of the surgical success stories of modern times.The first attempt of treating patients affected by knee osteoarthritis with arthroplasty goes back to the midnineteenth century.In 1880 the German surgeon Themistocles Gluck implanted the first primitive hinge joints made of ivory.The first part of the twentieth century saw the return of interpositional arthroplasty with the use of autologous tissues or metallic surfaces.In the early 1960s, John Charnley's cemented metal-on-polyethylene total hip arthroplasty inspired the development of the modern total knee replacement.He worked on the design of an implant that resurfaced the distal femur and proximal tibia without any direct mechanical link between the components began at the end of the sixties.Technological developments in the field of knee replacement continue to increase the range of solutions for the recovery of joint mobility of painful knee arthritis.

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