gms | German Medical Science

Deutscher Kongress für Orthopädie und Unfallchirurgie
74. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie
96. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie
51. Tagung des Berufsverbandes der Fachärzte für Orthopädie und Unfallchirurgie

26. - 29.10.2010, Berlin

10-year follow-up of Bernese Periacetabular Osteotomy – a new set of data in the late 1990s

Meeting Abstract

  • C. Albers - Universität Bern, Inselspital, Orthopädie, Bern, Switzerland
  • S. Steppacher - Universität Bern, Inselspital, Orthopädische Chirurgie, Bern, Switzerland
  • M. Tannast - Universität Bern, Inselspital, Orthopädie, Bern, Switzerland
  • R. Ganz - Universität Bern, Klinik für Orthopädische Chirurgie, Gümligen, Switzerland
  • K.A. Siebenrock - Universität Bern, Inselspital, Orthopädische Chirurgie, Bern, Switzerland

Deutscher Kongress für Orthopädie und Unfallchirurgie. 74. Jahrestagung der Deutschen Gesellschaft für Unfallchirurgie, 96. Tagung der Deutschen Gesellschaft für Orthopädie und Orthopädische Chirurgie, 51. Tagung des Berufsverbandes der Fachärzte für Orthopädie. Berlin, 26.-29.10.2010. Düsseldorf: German Medical Science GMS Publishing House; 2010. DocIN19-1575

DOI: 10.3205/10dkou114, URN: urn:nbn:de:0183-10dkou1141

Published: October 21, 2010

© 2010 Albers et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.


Outline

Text

Objective: The goal of the Periacetabular Osteotomy (PAO) is to correct the deficient acetabular coverage in hips with developmental dysplasia (DDH) to prevent secondary osteoarthritis. We present the 10-year survivorship, the clinical and radiographic outcome, and factors predicting poor outcome.

Methods: A retrospective study of 90 hips (83 patients) treated with PAO for DDH between January 1997 and January 2000 was performed. The mean age at surgery was 30±9.5 (11–49) years and the mean follow-up was 10.9±.9 (0.2–13.0) years. In all hips an arthrotomy was performed and in 33 of 90 hips (36.6%) an additional offset correction was necessary to allow impingement-free motion. Survivorship analysis was performed according to Kaplan and Meier and the endpoint was defined as a conversion to a total hip arthroplasty (THA). Demographical, clinical and radiological parameters were analyzed using the Cox regression analysis to detect predictive factors for poor outcome.

Results and conclusions: 11 hips were converted to a THA after 8.2±3.4 (1.3–12.3) years. This resulted in a cumulative Kaplan-Meier survivorship at 10 years of 91.6% (95%-confidence interval 85.6–96.6%). Age at operation and the preoperative osteoarthritis score according to Tönnis were significant predictors for poor outcome. At last follow up, the patients with preserved hip joints presented with a mean Merle d´Aubigné score of 15.8±2.4 (9–18).

The PAO is an effective and successful technique for the treatment of DDH to preserve or at least to decelerate the progression of secondary osteoarthritis. A good long term result depends on the preoperative cartilage condition and the age at surgery of the patient.