The Journal of Arthroplasty
Volume 25, Issue 1 , Pages 35-40, January 2010

Migration of the Trabecular Metal Monoblock Acetabular Cup System

  • Athanasios T. Kostakos, MD

      Affiliations

    • Department of Orthopedics, First IKA Hospital, Athens, Greece
    • Corresponding Author InformationReprint requests: Athanasios T. Kostakos, MD, Department of Orthopedics, First IKA Hospital, Athens, 1 Zaimi St, 15127 Athens, Greece.
    • ,
  • Georgios A. Macheras, MD

      Affiliations

    • Department of Orthopedics, First IKA Hospital, Athens, Greece
    • ,
  • Constantinos E. Frangakis, PhD

      Affiliations

    • Bloomberg School of Public Health, Johns Hopkins University, Baltimore, Maryland
    • ,
  • Kosmas S. Stafilas, MD

      Affiliations

    • Orthopedic Department, University of Ioannina, Ioannina, Greece
    • ,
  • Dimitrios Baltas, MD

      Affiliations

    • Department of Orthopedics, First IKA Hospital, Athens, Greece
    • ,
  • Theodoros A. Xenakis, MD

      Affiliations

    • Orthopedic Department, University of Ioannina, Ioannina, Greece

Received 1 November 2007; received in revised form 22 July 2008; accepted 7 September 2008. published online 05 December 2008.

Abstract 

Fifty-one primary total hip arthroplasties were performed using Trabecular Metal Monoblock Acetabular Cup System (Zimmer Inc, Warsaw, IN). In a 2-year prospective study, its behavior was closely monitored by clinical, radiologic, and component migration assessment by Ein-Bild-Röntgen-Analyse method. There were no complications. The mean Harris hip score was improved from 41 to 95. A polar gap at the postoperative radiograph was noted at 25% of the arthroplasties, most of which subsequently filled with bone within 6 months. The mean total absolute migration was 0.67 mm. The implant showed excellent early clinical and radiographic behavior. The 2-year migration rate study, as index of long-term survival and success, showed very good early implant stability and, in all cases except one, superior to the available studies for similar design acetabular cups.

Keywords: trabecular metal, monoblock, EBRA, migration

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 No benefits or funds were received in support of the study.

PII: S0883-5403(08)00806-1

doi:10.1016/j.arth.2008.09.027

The Journal of Arthroplasty
Volume 25, Issue 1 , Pages 35-40, January 2010

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