Table 1

 Basic demographic characteristics of the 38 patients with knee OA and 38 controls

CharacteristicOA (n = 38)Controls (n = 38)p Value
x Ray imaging of the knee joints of control subjects was, for ethical reasons, not performed.
K-L, Kellgren-Lawrence.
Age (years)64.1 (10.1)58.3 (9.1)<0.05
Sex (M/F)13/2515/23NS
OA grade (K-L)
    I2
    II18
    III14
    IV4