Midterm Results of Clinical Trial for Biolox Delta Ceramic on Ceramic before and after Approval

In 2011, a clinical trial of total hip arthroplasty with Biolox DeltaŴ ceramic on ceramic started in Japan before the clinical approval. We report the result with 33 hips as a mid-term one. No wear-related complication and no dislocation occurred with the maximum of 13.2 years follow-up. After the trial and the approval, we have continued to use Biolox DeltaŴ ceramic on ceramic even for difficult cases and the bearing couple is now our first choice for young and active patients.