Table 3.

10-year K–M survival data for revision due to aseptic loosening for the control groups, i.e. the 3 most common fixed bearing implants in each country

Country  Group	Subgroup (Implant type)	Tibial fixation	Total (n)	Revised for aseptic loosening (n, ‰)	Median follow-up (years)	K–M survival 10 years (%, 95% CI)	At risk (n)
Norway
Control	All	Any	19,580	51 (3)	4.6	99.6 (99.4–99.8)	4,127
	Profix	Any	12,611	27 (2)	5.7	99.7 (99.5–99.9)	3,401
	NexGen	Any	5,347	11 (2)	1.2	99.6 (99.4–99.8)	952
	AGC	Any	1,622	13 (8)	6.6	99.0 (98.4–99.6)	623
Australia
Control	All	Any	48,173	195 (4)	3.4	99.0 (98.8–99.2)	1,170
	Triathlon	Any	22,333	68 (3)	3.1	99.4 (99.2–99.6)	1,726
	NexGen	Any	16,609	76 (5)	3.3	99.2 (99.0–99.4)	1,459
	PFC Sigma
	fixed bearing	Any	9,231	51 (6)	4.9	98.9 (98.5–99.3)	793