Table 1 Baseline characteristics (n = 24)

Age, years, mean (SD)

67 (8)

Men, no (%)

10 (42)

Body weight, kg, mean (SD)

85.7 (14.3)

Height in cm, mean (SD)

172.3 (9.5)

Body mass index, mean (SD)

28.8 (3.7)

Other diseases, no (%)

22 (92)

Operated knee (right/left), no (%)

10 (42)/ 14 (58)

Opposite knee operated, no (%)

12 (50)

Fall(s) within the last ½ year, no (%)

5 (21)

Pain medication before testing, no (%)

23 (96)

No. of rehabilitation sessions before testing, mean (SD)

5.8 (2.4)

Strength training part of the rehabilitation, no (%)

24 (100)

Rehabilitation center (Van/VKV/Hvh/Br), no (%)

11 (46)/ 5 (21)/ 6 (25)/ 2 (8)

Days after operation, mean (SD)

38.3 (9.4)

Knee joint circumference, cm, mean (SD)

45.5 (2.9)

Knee PROM extension, degrees, mean (SD)^a

2.5 (6.2)

Knee PROM flexion, degrees, mean (SD)

112.3 (15.5)