| Treatment groups |  | |||
---|---|---|---|---|---|
Radiographic findings | Placebo (89 knees) | Diclofen ac (90 knees) | EA (91 knees) | Combined (90 knees) | p-value |
Kellgren and Lawrence X-ray grade [32] | |||||
   Grade 1 | 4 | 1 | 3 | 5 | 0.40f |
   Grade 2 | 4 | 6 | 5 | 7 | 0.84f |
   Grade 3 | 19 | 15 | 25 | 23 | 0.31c |
   Grade 4 | 62 | 68 | 58 | 55 | 0.16c |
Knee compartment with most severe change of OA | |||||
   Medial tibiofemoral | 63 | 77 | 69 | 64 | 0.73c |
   Lateral tibiofemoral | 12 | 5 | 13 | 11 | 0.24c |
Patellofemoral | 14 | 8 | 9 | 15 | 0.28c |