Table 2.

Plasma and Synovial Fluid (SF) Hsp70 in Patients with Osteoarthritis and P Values for Differences between Kellgren and Lawrence (KL) Subgroups.

	Total	KL Grade 2	KL Grade 3	KL Grade 4	P
n	72	26	23	23
SF Hsp70 (ng/mL)	53.3 ± 9.9	15.2 ± 1.4	50.9 ± 4.2	98.8 ± 28.2	<0.001
Plasma Hsp70 (ng/ml)	137.0±14.8	61.3±5.8	96.3±8.7	263.3±31.8	<0.001