The Effect of Risk Factors on the Levels of Chemical Elements in the Tibial Plateau of Patients with Osteoarthritis following Knee Surgery

Table 4

Spearman correlation coefficients between chemical elements content, the concentration ratios, and environmental exposure factors.

	Fe	THg	Pb	Cd	Se/Pb	Se/THg	Cd/Ca	Se	F^−/Ca ⋅ 1000
Age	0.39^xx	NS	NS	NS	NS	NS	NS	NS	0.30^x
Implants	0.48^xxx	NS	NS	NS	NS	NS	NS	NS	NS
Number of cigarettes smoked/day	NS	0.37^xx	0.71^xxxx	0.51^xxx	−0.48^xxx	NS	0.53^xxx	NS	NS
Fish and sea food diet	NS	0.42	NS	NS	NS	−0.36^xxxx	NS	0.32^x	NS
Sport activity	NS	NS	NS	NS	NS	NS	NS	−0.33^x	NS
Dental amalgams fillings	NS	NS	NS	NS	NS	NS	NS	NS	NS

Significant level: ; ; ; ; NS: nonsignificant difference; F⁻/Ca ⋅ 1000: F⁻ concentration in the inorganic portion of bone.