Table 2 Pain severity (WOMAC subscore A) after three intra-articular injections of sodium hyaluronate-chondroitin sulfate. Results are given as mean (SD). For each item, pain is graded from 0 (none) to 100 (extreme)

Items of WOMAC A

 A1 (walking)

46.0 (22.2)

23.3 (19.8)

17.7 (18.3)

16.7 (20.3)

 A2 (using stairs)

72.1 (17.3)

37.0 (22.9)

31.0 (22.8)

31.0 (26.7)

 A3 (in bed)

34.9 (25.2)

15.5 (19.0)

10.9 (17.7)

10.6 (18.0)

 A4 (sitting or lying)

60.6 (21.4)

30.1 (21.7)

24.6 (19.4)

25.4 (23.8)

 A5 (standing)

46.8 (23.5)

22.4 (22.5)

17.7 (18.8)

18.8 (22.2)

WOMAC A

52.1 (15.2)^a

25.7 (17.4)^a

20.4 (16.3)^a

20.5 (19.7)^a