Table 1.

- Summary of cobalt-chromium concentration levels.

Co-Cr levels	Duration
	One month pre-operative	One month post-operative	3 months post-operative	6 months post-operative	One year post-operative
Cobalt S	86,35 µg/L	63,6 µg/L	38,6 µg/L	27,95 µg/L	24.8 µg/L
Cobalt U	411,40 µmol/L	91,2 µg/L	89.8 µg/L	NA	33.7 µg/L
Chrome S	234,46 µg/L	NA	196.64 µg/L	104,56 µg/L	96.62 µg/L

S: blood, U: urine, NA: not available