Table 1.
Participant characteristics
| Total group (N = 26) | Foot orthoses (n = 13) | Flat inserts (n = 13) | |
|---|---|---|---|
| Age (years) | 60 (8) | 55 (4) | 65 (8) |
| Number (%) of women | 16 (62) | 8 (62) | 8 (62) |
| BMI (kg/m2) | 27.4 (4.7) | 25.1 (3.6) | 29.7 (4.7) |
| Right knee affected, n (%) | 17 (65) | 9 (69) | 8 (62) |
| Duration of pain | |||
| 3–6 months, n (%) | 2 (7.7) | – | 2 (15.4) |
| 6–12 months, n (%) | – | – | – |
| 1–2 years, n (%) | 2 (7.7) | – | 2 (15.4) |
| ≥ 2 years, n (%) | 22 (84.6) | 13 (100) | 9 (69.2) |
| Usual pain VAS (0 to 100 mm) | 43 (25) | 31 (13) | 56 (29) |
| Worst pain VAS (0 to 100 mm) | 57 (30) | 49 (26) | 66 (31) |
| AKPS (0 to 100) | 51 (18) | 61 (12) | 41 (18) |
Values are reported as mean (SD) unless otherwise stated
BMI body mass index, VAS visual analogue scale (0 = no pain; 100 = worst pain possible), AKPS Anterior Knee Pain Scale (0 = maximal disability; 100 = no disability)