Table 3.

Ion exposure data for 6 patients with high metal ion levels

Patient. no	Years of cobalt exposure	Years of chromium exposure	Days postoperatively
5	5.3	5.4	165
6	4.1	1.4	85
7	9.1	47	707
10	5.5	1.9	82
15	3.4	2.7	224
16	2.7	7.2	270
Median values	4.7	4.1	195