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Acetabular bone reconstruction in revision arthroplasty

A COMPARISON OF FREEZE-DRIED, IRRADIATED AND CHEMICALLY-TREATED ALLOGRAFT VITALISED WITH AUTOLOGOUS MARROW VERSUS FROZEN NON-IRRADIATED ALLOGRAFT



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Abstract

Deficiencies of acetabular bone stock at revision hip replacement were reconstructed with two different types of allograft using impaction bone grafting and a Burch-Schneider reinforcement ring. We compared a standard frozen non-irradiated bone bank allograft (group A) with a freeze-dried irradiated bone allograft, vitalised with autologous marrow (group B). We studied 78 patients (79 hips), of whom 87% (69 hips) had type III acetabular defects according to the American Academy of Orthopaedic Surgeons classification at a mean of 31.4 months (14 to 51) after surgery. At the latest follow-up, the mean Harris hip score was 69.9 points (13.5 to 97.1) in group A and 71.0 points (11.5 to 96.5) in group B. Each hip showed evidence of trabeculation and incorporation of the allograft with no acetabular loosening.

These results suggest that the use of an acetabular reinforcement ring and a living composite of sterile allograft and autologous marrow appears to be a method of reconstructing acetabular deficiencies which gives comparable results to current forms of treatment.


Correspondence should be sent to Dr B. G. Ochs; e-mail: ochsgunnar@gmx.de

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