Table 4 Number of total knee arthroplasty (TKA) cases and hospitals performing TKA per year in the study population compared to data from the external hospital quality assurance programme (eQA) [22]
Cases: study population | Cases: eQA | Cases: difference between data sets | % Cases: difference between data sets | Hospitals: study population | Hospitals: eQA | Hospitals: difference between data sets | % Hospitals: difference between data sets | |
|---|---|---|---|---|---|---|---|---|
2004 | 110,349 | 1016 | ||||||
2005 | 118,967 | 1054 | ||||||
2006 | 120,700 | 125,394 | 4694 | 3.7 | 888 | 1005 | 117 | 11.6 |
2007 | 136,379 | 999 | ||||||
2008 | 141,714 | 146,318 | 4604 | 3.1 | 926 | 1017 | 91 | 8.9 |
2009 | 148,298 | 1022 | ||||||
2010 | 140,866 | 146,747 | 5881 | 4.0 | 956 | 1036 | 80 | 7.7 |
2011 | 145,750 | 1030 | ||||||
2012 | 127,404 | 133,948 | 6544 | 4.9 | 987 | 1033 | 46 | 4.5 |
2013 | 121,134 | 127,192 | 6058 | 4.8 | 1007 | 1031 | 24 | 2.3 |
2014 | 124,544 | 130,804 | 6260 | 4.8 | 1017 | 1160 | 143 | 12.3 |
2015 | 134,224 | 1153 | ||||||
2016 | 146,615 | 1137 | ||||||
2017 | 148,160 | 1100 |