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Table 2 Number of patients undergoing UKA or TKA by year

From: Unicompartmental knee arthroplasty: A PearlDiver study evaluating complications rates, opioid use and utilization in the Medicare population

  UKA TKA TKA:UKA %UKA of cases
2007 264 6709 25.41 3.79%
2008 458 8793 19.20 4.95%
2009 506 10,405 20.56 4.64%
2010 641 12,960 20.22 4.71%
2011 625 14,637 23.42 4.10%
2012 728 15,976 21.95 4.36%
2013 911 19,697 21.62 4.42%
2014 1233 22,793 18.49 5.13%
2015 1382 26,480 19.16 4.96%
2016 1172 22,603 19.29 4.93%
Annualized 2017 1216 23,400 19.24 4.94%