Acetabular UHMWPE Survival and Wear Changes With Different Manufacturing Techniques

Meding, John B.; Keating, E. Michael; Davis, Kenneth

doi:10.1007/s11999-010-1571-6

Cited by 17 publications

(8 citation statements)

References 21 publications

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“…In univariate analysis, increased BMI was associated with an increased risk for conversion surgery. Biomechanically, this is consistent with increased acetabular wear rates secondary to increase joint reactive force from a larger body mass (19, 20). BMI may be considered in a patient with a FNF, although further studies are necessary to determine its role in the HA vs. THA for FNF treatment algorithm.…”

Section: Discussionsupporting

confidence: 62%

Risk factors for conversion surgery to total hip arthroplasty of a hemiarthroplasty performed for a femoral neck fracture

et al. 2018

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Section: Discussionsupporting

confidence: 62%

Risk factors for conversion surgery to total hip arthroplasty of a hemiarthroplasty performed for a femoral neck fracture

et al. 2018

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“…The GUR materials were different between the UHMWPE groups. Meding et al25 reported significant differences in wear rate among resins (GUR 415, 1050, and Himont 1900), with the UHMWPE liner made from GUR 1050 resin having the lowest wear rate of 0.05 mm/year. Therefore, a difference in GUR material possibly influenced the wear rate.…”

Section: Discussionmentioning

confidence: 99%

Wear resistant performance of highly cross‐linked and annealed ultra‐high molecular weight polyethylene against ceramic heads in total hip arthroplasty

Sato

Nakashima

Akiyama

et al. 2012

Journal Orthopaedic Research

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The purpose of this study was to examine the effects of ceramic femoral head material, size, and implantation periods on the wear of annealed, cross-linked ultra-high molecular weight polyethylene (UHMWPE) (XLPE) in total hip arthroplasty compared to non-cross-linked conventional UHMWPE (CPE). XLPE was fabricated by cross-linking with 60 kGy irradiation and annealing. Femoral heads made from zirconia and alumina ceramics and cobalt-chrome (CoCr) of 22 or 26 mm diameter were used. In this retrospective cohort study, the femoral head penetration into the cup was measured digitally on radiographs of 367 hips with XLPE and 64 hips with CPE. The average follow-up periods were 6.3 and 11.9 years, respectively. Both XLPE creep and wear rates were significantly lower than those of CPE (0.19 mm vs. 0.44 mm, 0.0001 mm/year vs. 0.09 mm/year, respectively). Zirconia displayed increased wear rates compared to alumina in CPE; however, there was no difference among head materials in XLPE (0.0008, 0.00007, and À0.009 mm/year for zirconia, alumina, and CoCr, respectively). Neither head size or implantation period impacted XLPE wear. In contrast to CPE, XLPE displayed low wear rates surpassing the effects of varying femoral head material, size, implantation period, and patient demographics. Further follow-up is required to determine the long-term clinical performance of the annealed XLPE. Keywords: polyethylene; wear; total hip arthroplasty; cross-linked; annealing Osteolysis is related to particulate ultra-high molecular weight polyethylene (UHMWPE) wear debris and is considered an important cause of aseptic loosening and late implant failure in total hip arthroplasty (THA). 1-3 Thus, UHMWPE wear is one of the major determinants influencing THA survivorship. Highly cross-linked UHMWPE (XLPE) is an alternative bearing surface developed to improve wear resistance and decrease osteolysis. XLPE has been studied extensively in vitro and has substantially decreased wear rates compared to non-cross-linked conventional UHMWPE (CPE) in hip simulator studies. 4,5 Preliminary clinical studies of XLPE in patients undergoing THA have confirmed these promising findings with a 30-80% reduction in wear compared to CPE at 3-5 years. 6,7 XLPE is fabricated using irradiation at 50-100 kGy for cross-linking and thermal treatment after irradiation to reduce free radicals and increase durability and cross-link density. Methods to prepare XLPE include radiation (gamma ray or electron beam), thermal treatment (remelted or annealed), and sterilization. 8 These methods, which influence mechanical properties, crystallinity, and oxidation states, are not equivalent, and the resulting clinical performances differ.The type of material and the size of femoral head are additional factors that influence wear. 9-12 Cobaltchromium alloy (CoCr) replaced stainless steel and titanium alloy due to its high wear resistance. 13

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“…However, they were matched on the basis of several parameters and the numbers were sufficient to reach significance. Although two types of acetabular components were used during the study period, both polyethylene liners were UHMWPE with similar properties 34,35 .…”

Section: Discussionmentioning

confidence: 99%

Long-Term Performance of Ceramic and Metal Femoral Heads on Conventional Polyethylene in Young and Active Patients

Meftah

Klingenstein

Yun

et al. 2013

Journal of Bone and Joint Surgery

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Acetabular UHMWPE Survival and Wear Changes With Different Manufacturing Techniques

Cited by 17 publications

References 21 publications

Risk factors for conversion surgery to total hip arthroplasty of a hemiarthroplasty performed for a femoral neck fracture

Risk factors for conversion surgery to total hip arthroplasty of a hemiarthroplasty performed for a femoral neck fracture

Wear resistant performance of highly cross‐linked and annealed ultra‐high molecular weight polyethylene against ceramic heads in total hip arthroplasty

Long-Term Performance of Ceramic and Metal Femoral Heads on Conventional Polyethylene in Young and Active Patients

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