Nugent M, Young SW, Frampton CM, et al. - This study was undertaken to investigate the lifetime risk of revision for patients in defined age groups at the time of primary surgery. Researchers applied the New Zealand Joint Registry to collect rates and causes of revision for all primary total hip arthroplasties conducted between January 1999 and December 2016. The findings revealed that the lifetime risk of revision may be a more meaningful and useful measure of longer-term outcomes than implant survival at defined time periods when counselling patients preoperatively. This research demonstrates the considerably increased likelihood of subsequent revision surgery in younger age groups.