Ankle arthroplasties generate wear particles similar to knee arthroplasties

Clinical Orthopaedics and Related Research
Akio KobayashiCharles L Saltzman

Abstract

Second-generation total ankle arthroplasties have encouraging medium-term results, but the wear of the joint materials is of concern. The aim of the current study was to examine and compare the size, shape, and concentration of polyethylene particles in synovial fluid with total ankle arthroplasties and established posterior-stabilized total knee arthroplasties. Synovial fluid was obtained from 15 patients with well-functioning total ankle arthroplasties and 11 patients with posterior-stabilized total knee arthroplasties at least 6 months after surgery. Polyethylene particles were isolated and analyzed using scanning electron microscopy. Particle size (equivalent circle diameter) in ankles was 0.81 +/- 0.09 microm (mean +/- standard error) and in knees was 0.78 +/- 0.08 microm. Particle shape (aspect ratio) in ankles was 1.57 +/- 0.04 and in knees was 2.30 +/- 0.22. The particle concentration was 1.02 +/- 0.43 x 10/mL in ankles and 1.13 +/- 0.56 x 10/mL in knees, and the particle concentration and size in total ankle arthroplasties were similar to those in total knee arthroplasties. Total ankle arthroplasties generated significantly rounder particles than total knee arthroplasties. These data suggest that the long-term result o...Continue Reading

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Citations

Jul 9, 2004·Clinical Orthopaedics and Related Research·C L SaltzmanT D Brown
May 5, 2010·The Journal of Bone and Joint Surgery. American Volume·N EspinosaJ G Snedeker
May 20, 2016·Acta Orthopaedica·Gurpal SinghChristoph Lohmann
Apr 4, 2017·Foot & Ankle International·Oliver N SchipperYing Zhou
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Aug 15, 2020·Foot & Ankle International·Jonathan DayScott J Ellis
Sep 17, 2009·Foot & Ankle International·Zachary VaupelPaul T Fortin
Jul 2, 2010·Clinical Orthopaedics and Related Research·Michel BonninThierry Judet
Oct 3, 2009·Foot & Ankle International·Jean-Luc BesseChristophe Lienhart
Sep 17, 2020·Foot & Ankle International·Ali-Asgar NajefiAndrew J Goldberg
Feb 4, 2011·Foot & Ankle International·Ari KokkonenEero A Belt
Jun 24, 2020·Clinical Orthopaedics and Related Research·Brandt C BucknerBruce J Sangeorzan
Apr 1, 2020·JBJS Case Connector·Richard T EppersonCharles L Saltzman
Dec 22, 2020·Foot & Ankle International·Nabil MehtaDaniel D Bohl
May 21, 2010·Foot and Ankle Surgery : Official Journal of the European Society of Foot and Ankle Surgeons·Dante RodriguezThibaut Leemrijse
May 18, 2010·Clinics in Podiatric Medicine and Surgery·Lawrence A DiDomenicoLaurence Z Cain

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