Table 2

Number and rate (per 100 000 population) of episodes involving primary and revision total knee replacement, by age group and sex, 2000. Source: HES, Department of Health

Age group (years)	Men, primary		Women, primary		Men, revision		Women, revision
Age group (years)	N	Rate	N	Rate	N	Rate	N	Rate
*Detail suppressed; fewer than 10 episodes.
†Total rates have been age standardised to the 1996 England population.
<35	31	0.3	51	0.5	*	*	*	*
35 to 39	21	1.1	31	1.6	*	*	*	*
40 to 44	60	3.6	77	4.5	15	0.9	14	0.8
45 to 49	145	9.4	179	11.4	31	2.0	34	2.2
50 to 54	355	21.2	594	35.0	48	2.9	51	3.0
55 to 59	925	69.0	1096	80.2	94	7.0	117	8.6
60 to 64	2009	169.9	2130	173.7	213	18.0	193	15.7
65 to 69	2627	254.7	3267	290.6	293	28.4	242	21.5
70 to 74	3129	354.9	4436	417.5	268	30.4	326	30.7
75 to 79	2666	384.1	4224	429.9	264	38.0	331	33.7
80 to 84	1159	303.0	2302	346.9	111	29.0	171	25.8
85+	403	154.4	1026	149.3	39	14.9	115	16.7
Total†	13 530	62.1	19 413	70.7	1387	6.3	1609	5.9