The Journal of Bone and Joint Surgery (American). 2004;86:2385-2392
© 2004 The Journal of Bone and Joint Surgery, Inc.
Acetabular Reconstruction with Impaction Bone-Grafting and a Cemented Cup in Patients Younger Than Fifty Years Old
B. Willem Schreurs, MD, PhD1,
Vincent J.J.F. Busch, MD1,
Marianne L. Welten, MD1,
Nico Verdonschot, PhD1,
Tom J.J.H. Slooff, MD, PhD1 and
Jean W.M. Gardeniers, MD, PhD1
1 Department of Orthopaedics, University Medical Center Nijmegen, P.O. Box 9101,
6500 HB Nijmegen, The Netherlands. E-mail address for B.W. Schreurs:
b.schreurs{at}orthop.umcn.nl
Investigation performed at University Medical Center Nijmegen,
Nijmegen, The Netherlands
A commentary is available with the electronic versions of this article,
on our web site
(www.jbjs.org)
and on our quarterly CD-ROM (call our subscription department, at
781-449-9780, to order the CD-ROM).
The authors did not receive grants or outside funding in support of their
research or preparation of this manuscript. They did not receive payments or
other benefits or a commitment or agreement to provide such benefits from a
commercial entity. A commercial entity (Stryker Howmedica) paid or directed,
or agreed to pay or direct, benefits to a research fund, foundation,
educational institution, or other charitable or nonprofit organization with
which the authors are affiliated or associated.
Background: Acetabular bone deficiency can present a challenge
during total hip arthroplasty, especially in young patients. The purpose of
the present study was to evaluate the long-term clinical and radiographic
outcomes of primary and revision acetabular reconstruction with use of an
impaction bone-grafting technique and a cemented polyethylene cup in young
patients who had preexisting acetabular bone deficiency.
Methods: Forty-two consecutive acetabular reconstructions were
performed in thirty-seven patients who were younger than fifty years old
(average, 37.2 years old). The impaction bone-grafting technique was used for
twenty-three primary and nineteen revision acetabular reconstructions.
Twenty-eight patients (thirty-one hips) were available for review after a
minimum duration of follow-up of fifteen years. Clinical and radiographic
results were assessed, and survivorship analysis was performed with the
Kaplan-Meier method.
Results: Eight hips were revised at a mean of twelve years (range,
three to twenty-one years) after a primary reconstruction (four hips) or
revision reconstruction (four hips). The revision was performed because of
aseptic loosening of the acetabular component in four hips and because of
culture-proven septic loosening in two. Two additional cups (both in hips that
had had a revision reconstruction) were revised, during revision of the
femoral stem, because of wear (one hip) or because of persistent
intraoperative instability (one hip). Twenty-eight hips (in twenty-five
patients) had retention of the acetabular component for a minimum of fifteen
years. The mean Harris hip score for that group was 89 points. Twenty-six of
these twenty-eight hips had no or slight pain. Kaplan-Meier analysis revealed
a twenty-year survival rate of 80% (95% confidence interval, 67% to 94%) with
acetabular revision for any reason as the end point and of 91% (95% confidence
interval, 80% to 100%) with acetabular revision because of aseptic loosening
as the end point.
Conclusions: Acetabular reconstruction with use of impaction
bone-grafting and a cemented polyethylene cup is a reliable and durable
technique that is associated with good long-term results in young patients
with acetabular bone-stock defects.
Level of Evidence: Therapeutic study, Level IV (case
series [no, or historical, control group]). See Instructions to Authors for a
complete description of levels of evidence.

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