The Journal of Arthroplasty
Volume 23, Issue 8 , Pages 1128-1131, December 2008

Primary Total Hip Arthroplasty Using a Dual-Geometry Cup to Treat Protrusio Acetabuli

  • Robert J. Krushell, MD

      Affiliations

    • The Center for Hip and Knee Replacement, Baystate Medical Center, Springfield, Massachusetts
    • New England Orthopedic Surgeons, Springfield, Massachusetts
    • ,
  • Richard J. Fingeroth, MD

      Affiliations

    • The Center for Hip and Knee Replacement, Baystate Medical Center, Springfield, Massachusetts
    • New England Orthopedic Surgeons, Springfield, Massachusetts
    • ,
  • Barbara Gelling

      Affiliations

    • New England Orthopedic Surgeons, Springfield, Massachusetts
    • Corresponding Author InformationReprint requests: Barbara Gelling, New England Orthopedic Surgeons, 300 Birnie Avenue, Suite 201, Springfield, MA 01107.

Received 6 February 2007; accepted 17 September 2007. published online 25 February 2008.

Abstract 

This retrospective study examined the results of 29 total hip arthroplasties on patients with protrusio acetabuli, implanted with a dual-geometry shell with a mean follow-up of 48 months (range, 24-110). All surgeries were performed using a conical reamer in addition to a spherical reamer with morsellized autogenous graft packed into the medial acetabular protrusio defect. The Harris Hip Score increased from 41 to 85. There were no cases of aseptic loosening of the acetabular component by radiographic criteria. In 93% of the cases (27 hips), the bone graft appeared incorporated, and in 83% of the cases (24 hips), there were no radiolucent lines present. Using a 2-stage technique of bone preparation to insert a dual-geometry acetabular cup, excellent results were obtained in these 29 hips.

Key words: protrusio acetabuli, total hip arthroplasty, acetabular component

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 Benefits or funds were received in partial or total support of the research material described in this article. These benefits or support were received from Stryker Orthopaedics (Mahwah, NJ).

PII: S0883-5403(07)00586-4

doi:10.1016/j.arth.2007.09.020

The Journal of Arthroplasty
Volume 23, Issue 8 , Pages 1128-1131, December 2008

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