Table 3.

Correlations between inflammatory cytokines and patient characteristics

	Age	K-L grade	ROM	WOMAC
IL-1β	−0.272*	− 0.363**	0.214	− 0.317**
IL-6	−0.261*	− 0.291**	0.219*	− 0.297**
TNF-α	−0.240*	− 0.149	−0.033	− 0.119
M-CSF	0.085	0.123	−0.033	−1.00

IL-1β interleukin 1β; IL-6 interleukin 6; TNF-α tumor necrosis factor α; M-CSF macrophage colony-stimulating factor; K-L grade Kellgren-Lawrence grade; ROM range of motion; WOMAC Western Ontario and McMaster Universities Osteoarthritis Index. * p < 0.05 ** p < 0.01.