Knees (Patients) 45 knees (30 patients)
Mean age (years) 66.1 (47 to 79)
Male/female (%) 16.7 / 83.3
Duration of follow-up (years) 8.2 (5 to 13)
Cement/cementless (knees) 39 / 6
FNK/ The Foundation Total Knee System (knees)  17 /28
Table 1: Clinical data of 30 patients with RA.