Table 2. Comparison of gravimetric and CT wear measurements for specimens tested at 2 Mc.

	Weight loss (mg)
Acetabular cup	CT	Gravimetric	Difference
XLPE_1	2.97	5.40	-2.42
XLPE_2	4.91	6.86	-1.95
XLPE_3	9.83	9.51	0.32
STD_PE_1	23.26	20.37	2.89
STD_PE_2	21.38	23.06	-1.69
STD_PE_3	19.24	17.77	1.47
XLPE_VE_1	21.89	23.94	-2.06
XLPE_VE_2	13.79	16.43	-2.64
XLPE_VE_3	15.04	18.41	-3.37