Table 2: Whole blood metal ion concentrations (µg/l) as function of modular neck materials.

All Patients CrCo Neck Ti Neck P-Values
Cr
(min-max, SD)		 0.34
0.13-0.77, 0.14		 0.35
0.15-0.61, 0.12		 0.33
0.13-0.77, 0.16		 0.43
Co
(min-max, SD)		 0.34
0.17-0.88, 0.18		 0.46
0.19-0.88, 0.23		 0.26
0.17-0.47, 0.08		 <0.01
Ti
(min-max, SD)		 1.83
1.3-3.6, 0.47		 1.59
1.3-2.1, 0.22		 1.98
1.4-3.6, 0.52		 <0.01