Table 3.

Fixation method for 4 time periods

	1987–1992	1993–1997	1998–2002	2003 and later	Total
	n (%)	n (%)	n (%)	n (%)	n (%)
Cemented	19,837 (82)	19,833 (81)	23,161 (81)	24,104 (75)	86,935 (79)
Uncemented	3,142 (13)	3,355 (14)	3,715 (13)	4,410 (14)	14,622 (13)
Hybrid b	1,028 (4.3)	1,317 (5.4)	1,363 (4.7)	684 (2.1)	4,392 (4.0)
Inverse hybrid c	60 (0.2)	45 (0.2)	482 (1.7)	3,140 (9.7)	3,727 (3.4)
Total	24,067 (100)	24,550 (100)	28,721 (100)	32,338 (100)	109,676 (100) a

^a The fixation method was not reported for 1,206 prostheses.

^b Hybrid means cemented femur component and uncemented cup.

^c Inverse hybrid means uncemented femur component and cemented cup.