Abstract
Introduction and Aims: Because of its superior tribologic properties and bioinert composition, alumina-alumina (AL-AL) bearing surfaces are proposed to improved survival of total hip arthroplasty (THA), but previously reported early complications prevented widespread use of this material. This study compares early results and complication with Ceraver Metal-Polyethylene (M-P) and AL-AL THA.
Method: One hundred forty-eight Ceraver hybrid THA in patients less than 70 years old were randomised to M-P or AL-AL bearing surfaces. We present the clinical and radiological results for patients two to seven years after their surgery.
Results: No significant difference was found on WOMAC and Merle D’Aubigné Postel scores. No specific complication associated with alumina components like fracture or malpositioning of the acetabular insert were observed in this study. Documented complications were: infection four AL-AL /two M-P; dislocation one AL-AL /four M-P; and heterotopic ossification 47% AL-AL /24% M-P. No aseptic loosening was observed.
Conclusion: Ceraver AL-AL bearing surfaces give early clinical and radiological results similar to M-P. Our results are in accordance with studies suggesting that AL-AL have a potential to become good bearing surfaces in THA in the young patients.
These abstracts were prepared by Editorial Secretary, George Sikorski. Correspondence should be addressed to Australian Orthopaedic Association, Ground Floor, The William Bland Centre, 229 Macquarie Street, Sydney, NSW 2000, Australia.
At least one of the authors is receiving or has received material benefits or support from a commercial source.
