Table 3.

Osteolysis and wear for each cup type. Osteolysis classified according to the system presented in the text. Wear presented as categorical data: (1) 0–29%, (2) 30–49%, and (3) >59.

Cup	Number	Osteolysis			Wear
		1	2	3	1	2	3
Romanus HA*	82	14	51	17	57	19	5
Romanus non HA*	75	12	42	21	54	22	1
ABG HA**	27	1	22	4	22	5	0
Omnifit**	16	2	11	3	10	2	2
Trilogy***	6	0	5	1	5	1	0

^*Biomet Orthopaedics, Warsaw, Indiana, USA.

^**Stryker, Hopkinton, Massachusetts, USA.

^***Zimmer, Warsaw, Indiana, USA.