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Table 3 Knee Osteoarthritis Functional Grade (KOFG)* changes in patients after 3 and 6 months of treatment. Values are presented as n (%)

From: The effect of treatment with a non-invasive foot worn biomechanical device on subjective and objective measures in patients with knee osteoarthritis- a retrospective analysis on a UK population

  Baseline 3 months 6 months
Grade 1 117 (25.71%) 190 (41.76%) 197 (43.29%)
Grade 2 207 (45.49%) 193 (42.42%) 196 (43.07%)
Grade 3 95 (20.88%) 62 (13.63%) 52 (11.43%)
Grade 4 36 (7.91%) 10 (2.19%) 10 (2.19%)
  1. Descriptive statistics of patient’s grade distribution over time. The average grade was 2.1 at baseline, 1.8 at 3 months and 1.7 at 6 months. Significant differences were found in paired T-test between baseline and 3 months (p < 0.001) and between baseline and 6 months (p < 0.001). There were no significant differences in mean grade score between 3 and 6 months (p = 0.01) *Grade 1- least severe, Grade 4- most severe