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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 299 - 299
1 Sep 2012
Clauss M Frunz S Pannhorst S Arteschrang A Ilchmann T
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Introduction

Primary stability of the Burch-Schneider ring (BSR) in case of acetabular revision is discussed controversial. In a retrospective two centre cohort study we analyzed the influence of the mode of screw fixation and the restoration of the center of rotation on migration, loosening and other radiographic parameters.

Material/Methods

Patients with a minimal radiographical follow-up of 2 years and suitable for EBRA analysis were included. In group 1 (46 patients) screws were placed through the cranial spherical part of the ring and covered by cement and cup, in group 2 (40 patients) screws were placed through the cranial flange. Preoperative bone defects were classified, the postoperative centre of rotation was determined. Changes of screws were recorded, migration exceeding >1mm was seen as significant.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 179 - 179
1 Sep 2012
Ilchmann T Pannhorst S Mertens A Clauss M
Full Access

Introduction

The usefulness of minimal invasive hip replacement is frequently discussed but there is a lack of data on the effect of the surgical approach on early results. We wanted to study the effect of the surgical approach on the peri- and early postoperative outcome.

Material/Methods

In a prospective case control study 315 elective hip replacements were performed between January 2008 and March 2010. Until March 2009 a lateral transgluteal approach (STD) was used, then the approach was changed to a minimal invasive anterior approach (MIS). All operations were performed in the same routine setting not affected by the approach. Duration of operation, complications and bloodloss were assessed. 1 week postoperatively, independent mobility, stairs, central analgetics were analysed and length of stay was recorded. At 6 and 12 weeks, pain and patients satisfaction (VAS) and the Harris Hip Score were assessed.

Pre- and postoperative radiographs were compared for component position and orientation (EBRA).