Abstract
Introduction and Aims: Eight thousand Duraloc 300 cups were implanted worldwide in 2002. To our knowledge, no 10-year results have been published to date. We undertook this study to ascertain whether this optimism was justified.
Method: One hundred consecutive total hip replacements using a Duraloc 300 cup were reviewed at a minimum of 10 years. Post-operative x-rays were analysed for cup placement and interface gaps. Follow-up films were analysed for lucent lines, osteolysis, wear and migration.
Kaplan-Meier survivorship analysis was performed.
Results: All components were found to be stable with no evidence of loosening or migration. The mean rate of wear was 0.12mm per year. Three hips developed pelvic osteolysis in zone 2 at the level of the apex hole, of which two have successfully undergone a bone grafting procedure and one patient is awaiting surgery.
Conclusion: The Duraloc 300 cup has excellent 10-year results with no cases of loosening. There was a low incidence of pelvic osteolysis. Cementless fixation provides dynamic biological fixation, which is continuously renewed with the passage of time. There is no reason to believe that the durability of fixation will not extend well beyond 10 years.
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.
