Difference in cumulative revision of knee constructs compared with a contemporary benchmark at 7 years in men aged between 55 years and 75 years, using all total knee and unicondylar replacements with ≥500 procedures remaining at risk. Difference in cumulative revision of knee constructs compared with a contemporary benchmark at 7 years in men aged between 55 years and 75 years, using all total knee and unicondylar replacements with ≥500 procedures remaining at risk. Kevin C Deere et al. BMJ Open 2019;9:e026736 ©2019 by British Medical Journal Publishing Group