Pre-entry |
Pre-entry A:
Product launched under Beyond Compliance.
Pre-entry B:
Products registered with the National Joint Registry. All primaries and revisions monitored via supplier feedback.
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3 years |
3A rating:
150 with minimum 3 years' follow‑up with actual revision rates of less than 3%. All deaths, loss to follow-up failures and indications for revisions recorded.
3B rating:
Data for a smaller cohort demonstrating less than 3% revision rates at 3 years, and patient time incidence rate (PTIR) or Kaplan–Maier survivorship data showing confidence limits on the data.
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5 years |
5A rating:
250 patients (with data from beyond the developing centre submitted) with minimum 5 years follow-up with actual revision rates of less than 5%. All deaths, loss to follow-up indications for revisions recorded.
5B rating:
Data for a smaller cohort demonstrating less than 5% revision rates at 5 years, and PTIR or Kaplan–Maier survivorship data showing confidence limits on the data.
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7 years |
7A rating:
350 patients (with data from beyond the developing centre submitted) with a minimum of 7 years follow-up with actual revision rates of less than 7%. All deaths, loss to follow-up, failures and indications for revisions recorded.
7B rating:
Data for a smaller cohort demonstrating 7% at 7 years, and PTIR or Kaplan–Maier survivorship data showing confidence limits on the data.
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10 years |
10A rating:
500 patients (including 3 centres in cohort and including data from beyond the developing centres) with a minimum of 10 years' follow-up with a survivorship of better than 90%. All deaths, loss to follow-up, failures and indications for revision included in data.
10B rating:
Data for a smaller cohort demonstrating 10% at 10 years, and PTIR or Kaplan–Maier survivorship data showing confidence limits on the data.
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