The Journal of Arthroplasty
Volume 25, Issue 2 , Pages 197-202, February 2010

Acetabular Cup Revision With the Use of the Medial Protrusio Technique at an Average Follow-up of 6.6 Years

  • David Fabi, MD

      Affiliations

    • Department of Orthopaedic Surgery, University of Illinois Medical Center at Chicago, Chicago, Illinois
    • Corresponding Author InformationReprint requests: David Fabi, MD, 400 West Ontario Street Unit 703, Chicago, IL 60610.
    • ,
  • Mark Gonzalez, MD, M.Eng

      Affiliations

    • Department of Orthopaedic Surgery, University of Illinois Medical Center at Chicago, Chicago, Illinois
    • Department of Mechanical Engineering, University of Illinois at Chicago, Chicago, Illinois
    • ,
  • Wayne Goldstein, MD

      Affiliations

    • Department of Orthopaedic Surgery, University of Illinois Medical Center at Chicago, Chicago, Illinois
    • Illinois Bone and Joint Institute, Morton Grove, Illinois
    • ,
  • Muhammad Ahmed, BS

      Affiliations

    • College of Medicine, University of Illinois at Chicago, Chicago, Illinois

Received 3 January 2008; accepted 30 January 2009. published online 13 May 2009.

Abstract 

A significant rim defect encountered during revision surgery can make stable cementless cup fixation difficult. One approach to this problem is to medialize the acetabular cup to improve the degree of rim contact. In this study, we investigate this technique, termed the medial protrusio technique, for acetabular fixation in revision hip arthroplasty. A retrospective review of 25 patients (25 hips) who underwent medialization was performed. Clinical and radiographic evaluation was performed. At an average follow-up of 6.6 years, the overall patient function and satisfaction were good to excellent, with a mean Harris hip score of 85.2. This demonstrates that the medial protrusio technique can be a valuable option in addressing acetabular cup failure.

Keywords: revision total hip arthroplasty, Kohler's line, acetabular cup, medialization, fixation

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

PII: S0883-5403(09)00041-2

doi:10.1016/j.arth.2009.01.019

The Journal of Arthroplasty
Volume 25, Issue 2 , Pages 197-202, February 2010

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