Table 1 Characteristics of patients with knee osteoarthritis (N = 52)

Gender

Female

43 (83%)

Male

9 (17%)

Age, years

60.5 ± 8.0

45 - 79

Body mass index, kg/m²

29.0 ± 3.9

22.4 - 37.4

Duration of symptoms, years

6.2 ± 8.1

1 - 47

Lateral trunk motion, degrees

22.7 ± 6.6

10.7 - 38.9

Maximum walking speed (m/s)

1.14 ± 0.28

0.51 - 1.64

WOMAC-Stiffness score

4.1 ± 1.9

0 - 8

WOMAC-Pain score

11.2 ± 5.4

0 - 20

Pain (VAS 0-10)

5.0 ± 2.5

0.3 - 9.3

Isokinetic muscle strength, (quadriceps/hamstrings) Nm/kg

0.78 ± 0.35

0.08 - 1.63

K&L grade*, no of knees

   Right

Grade 0

0

Grade 1

37 (71.2%)

Grade 2

8 (15.4%)

Grade 3

5 (9.6%)

Grade 4

1 (1.9%)

Missing

1 (1.9%)

   Left

Grade 0

2 (3.8%)

Grade 1

33 (63.5%)

Grade 2

7 (13.3%)

Grade 3

8 (15.4%)

Grade 4

2 (3.8%)

Joint Space Narrowing

   Right

Medial

25 (48.0%)

Lateral

4 (7.6%)

   Left

Medial

29 (55.8%)

Lateral

9 (17.3%)

Osteophytes

   Right

Medial

49 (94.3%)

lateral

44 (84.7%)

   Left

Medial

50 (96.2%)

Lateral

44 (84.6%)