Table 2.

Revision by Age Group: Total Number and Percent of Total Accounted for.

Year	rTHA					rTKA
	Number of Revisions
	<55	55–64	65–74	75–84	85+	<55	55–64	65–74	75–84	85+
2002	8010	5881	9547	10,539	2917	5937	7870	11,060	9337	1402
2003	6902	5872	9137	10,081	2838	6258	8314	11,907	9273	1625
2004	7452	6588	9358	10,605	3258	7185	9546	12,784	9797	1687
2005	7306	6657	9125	11,094	3156	8649	11,293	14,074	10,663	1841
2006	7085	7184	8849	9611	3080	8233	12,418	14,073	10,250	1892
2007	7148	7241	9440	10,434	3319	8411	13,673	15,218	11,311	1998
2008	7832	8499	9614	10,996	4021	10,899	17,095	17,640	11,961	2395
2009	7039	8340	10,084	10,267	3922	9906	16,551	17,855	11,125	2258
2010	8382	9722	11,228	10,580	3923	11,709	19,154	19,190	12,272	2441
2011	9351	11,741	12,402	11,164	3993	12,268	21,473	20,803	12,405	2470
2012	8805	11,160	13,000	10,895	3880	12,090	20,460	20,980	12,315	2215
2013	8555	12,680	14,160	10,755	4015	11,305	21,450	22,640	12,070	2375
2014	8345	12,520	14,485	10,575	4285	11,570	22,045	23,960	11,995	2530
	Percentage (%) of Total Revisions Accounted for by Age Group
2002	21.7	15.9	25.9	28.6	7.9	16.6	22.0	31.1	26.4	4.0
2014	16.7	25.0	28.8	21.0	8.5	16.0	30.6	33.3	16.6	3.5
Change	−5.0	+9.1	+2.9	−7.6	+0.6	−0.6	+8.6	+2.2	−7.8	−0.5

rTHA, revision total hip arthroplasty; rTKA, revision total knee arthroplasty. Bold values denotes growth in incidence; italicized values denotes decrease in incidence.