Polyethylene wear particles in synovial fluid after total knee arthroplasty

Clinical Orthopaedics and Related Research
Yukihide MinodaKunio Takaoka

Abstract

The aims of the current study were to examine polyethylene particles in synovial fluid at an early stage, and to compare a newly introduced medial pivot total knee prosthesis with an established posterior-stabilized total knee prosthesis. Synovial fluid was obtained 1 year after knee arthroplasty from 17 patients with well-functioning prostheses (22 knees, 11 posterior-stabilized prostheses and 11 medial pivot prostheses) under complete sterile conditions. Polyethylene particles were isolated and analyzed by scanning electron microscopy. Particle size (equivalent circle diameter) was 0.78 +/- 0.08 microm (mean +/- standard error) in posterior-stabilized prostheses and 0.67 +/- 0.06 microm in medial pivot prostheses. Particle shape (aspect ratio) was 2.30 +/- 0.22 in posterior-stabilized prostheses and 1.90 +/- 0.16 in medial pivot prostheses. The total numbers of particles were 1.16 +/- 0.57 x 10(8) in posterior-stabilized prostheses and 9.01 +/- 2.95 x 10(6) in medial pivot prostheses. Particles were smaller and rounder in medial pivot prostheses than in posterior-stabilized prostheses, but the differences were not significant. The difference in the common logarithm of particle number was significant. The medial pivot prosthes...Continue Reading

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Citations

Jul 12, 2014·International Orthopaedics·Robert SchmidtC Lowry Barnes
Oct 27, 2015·Journal of Functional Biomaterials·Yan ZhouHong Liang
Feb 2, 2017·The Knee·George A MacherasStamatios A Papadakis
Sep 16, 2004·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Yukihide MinodaKunio Takaoka
Nov 26, 2015·Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society·Mark A MillerKenneth A Mann
Jul 29, 2009·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Kentaro IwakiriKunio Takaoka
Sep 7, 2007·Journal of Biomedical Materials Research. Part B, Applied Biomaterials·Kentaro IwakiriKunio Takaoka
Dec 12, 2012·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Kazunari IshidaRyosuke Kuroda
Nov 8, 2011·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Takahiro IidaHiroaki Nakamura
Oct 22, 2013·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Yukihide MinodaHiroaki Nakamura
Nov 26, 2009·The Journal of Bone and Joint Surgery. American Volume·Yukihide MinodaKunio Takaoka
Aug 1, 2020·PloS One·Evangelos DanopoulosJeanette M Rotchell
Jul 9, 2004·Clinical Orthopaedics and Related Research·Akio KobayashiCharles L Saltzman
Feb 6, 2016·Knee Surgery, Sports Traumatology, Arthroscopy : Official Journal of the ESSKA·Yukihide MinodaHiroaki Nakamura
Dec 2, 2009·Clinical Orthopaedics and Related Research·Young-Hoo KimKwang-Hoon Lee
Jul 7, 2009·The Journal of Arthroplasty·Cheng-Yu FanChian-Her Lee

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