Plasma proteins present in osteoarthritic synovial fluid can stimulate cytokine production via Toll-like receptor 4

Table 1 Clinical and demographic characteristics of OA patients whose synovial fluid was analyzed with mass spectrometry

Subject^a	Age (years)	K-L score	SF cell count (cells/mm³)
1	43	3	1,090
2	70	3	400
3	68	2	850
4	72	4	Not measured
5	74	4	Not measured

K-L, Kellgren-Lawrence OA score; SF, synovial fluid. ^aAll subjects were male and Caucasian with symptomatic pain in the aspirated knee.

ISSN: 1478-6362