Read Complete Article Here Written by Angie Stewart-March 15, 2018 – The population of patients receiving hip and knee replacements was younger in 2014 than in 2000, according to a study presented at the 2018 Annual Meeting of the American Academy of Orthopaedic Surgeons. A younger population could increase the likelihood of modern implants wearing out in the patients’ lifetimes… …1. The average age for primary total hip replacement decreased from 66.3 years to 64.9 years from 2000 to 2014… …7. Researchers predict primary total hip replacement will grow 171 percent and primary total knee replacement will grow by up to 189 percent by 2030, for a total of 635,000 and 1.28 million procedures, respectively.