Table 1.

Patient demographics and baseline clinical status

	PFC group (n = 38)	CKS group (n = 39)
Sex (female/male)	26/12	24/15
Age, years	65 (10; 45–81)	69 (11; 48–88)
Height, cm	169 (9; 154–187)	170 (11; 148–190)
Weight, kg	85 (18; 61–130)	82 (15; 60–120)
BMI	30 (5; 21–45)	28 (4; 21–39)
Diagnosis (OA/RA)	33/5	37/2
ROM, degrees
Extension	–4 (6; -20 to 0)	–5 (6; -20 to 5)
Flexion	109 (14; 75–135)	111 (19; 70–140)
Total ROM	104 (16; 65–125)	106 (20; 70–140)
KSS, points
Knee	53 (17; 9–95)	51 (17; 15–91)
Function	37 (20; -5–70)	42 (20; -10–90)
Total	89 (32; 4–150)	92 (29; 40–177)
WOMAC score, points	54 (13; 25–75)	52 (14; 25–95)
VAS pain	62 (17; 26–90)	55 (17; 20–91)