Migration of the Trabecular Metal Monoblock Acetabular Cup System

Athanasios T. Kostakos, Georgios A. Macheras, Constantinos E. Frangakis, Kosmas S. Stafilas, Dimitrios Baltas, Theodoros A. Xenakis

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish (US)
Pages (from-to)35-40
Number of pages6
JournalJournal of Arthroplasty
Volume25
Issue number1
DOIs
StatePublished - Jan 2010

Keywords

  • EBRA
  • migration
  • monoblock
  • trabecular metal

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine

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