Table 2.
The concentration ratios chemical elements in human tibial plateau from patients after knee surgery (mg/kg dm).
| Se/Pb | Se/Cd | Se/THg | F−/Ca · 1000 | |
|---|---|---|---|---|
| Female (n = 22) | ||||
| AM ± SD | 0.03 ± 0.02 | 1.53 ± 1.12 | 19.13 ± 12.84 | 41.28 ± 21.81 |
| Med. | 0.03 | 1.15 | 14.56 | 40.16 |
| Range | 0.009–0.10 | 0.35–4.93 | 0.35–4.93 | 13.19–91.27 |
| QL–QU | 0.02–0.03 | 0.77–2.17 | 8.56–32.99 | 22.90–49.70 |
|
| ||||
| Male (n = 11) | ||||
| AM ± SD | 0.02 ± 0.02 | 1.30 ± 1.32 | 14.74 ± 13.84 | 39.52 ± 18.74 |
| Med. | 0.02 | 0.94 | 8.63 | 34.40 |
| Range | 0.01–0.04 | 0.18–4.5 | 3.12–47.41 | 16.40–73.82 |
| QL–QU | 0.01–0.02 | 0.42–1.32 | 4.70–18.51 | 19.90–54.97 |
|
| ||||
| Total n = 33 | ||||
| AM ± SD | 0.03 ± 0.02 | 1.45 ± 1.17 | 17.66 ± 13.13 | 40.69 ± 20.56 |
| Med. | 0.02 | 1.05 | 13.40 | 37.71 |
| Range | 0.02–0.10 | 0.18–4.93 | 0.94–47.41 | 13.20–91.27 |
| QL–QU | 0.02–0.03 | 0.76–2.13 | 8.04–31.41 | 22.90–53.60 |
|
| ||||
| Female versus Male | ||||
| U | 35 | NS | NS | NS |
| p | 0.001 | |||
AM: arithmetic mean; SD: standard deviation; QL: lower quartile; QU: upper quartile; U: Mann-Whitney U test; p: level of significance; NS: nonsignificant difference; F−/Ca · 1000: F− concentration in the inorganic portion of bone.