Table 2

 Biochemical markers in 38 patients with knee OA and 38 controls

MarkerOAControl serump1p2
SerumSF
Results are shown as mean (SD).
COMP, cartilage oligomeric matrix protein; SF, synovial fluid.
p1, comparison of biochemical markers between serum and SF in patients with knee OA; p2, comparison of serum biochemical markers between patients with knee OA and controls.
Pentosidine (nmol/l)132.1 (56.2)70.7 (22.8)97.7 (24.1)<0.001<0.01
COMP (μg/ml)4.1 (1.3)33.7 (11.0)3.3 (1.4)<0.001<0.05