Baseline characteristics
| Patient education (n=59) | Patient education and exercise therapy (n=62) | All (n=121) | |
|---|---|---|---|
| Age | 17.3 (0.9) | 17.2 (1.1) | 17.2 (1.0) |
| Gender (% females) | 86 | 74 | 80 |
| Weight (kg) | 66.5 (12.8) | 63.0 (11.3) | 64.7 (12.1) |
| Height (cm) | 171.7 (8.3) | 172.2 (9.1) | 172.0 (8.7) |
| BMI | 22.4 (3.1) | 21.1 (2.5) | 21.7 (2.9) |
| Duration of symptoms (n) (months) | |||
| 2–6 | 1 | 5 | 6 |
| 6–12 | 5 | 5 | 10 |
| >12 | 53 | 52 | 105 |
| Average pain duration (months)* | 39 (24;63) | 36 (18;51) | 39 (21;60) |
| Bilateral PFP (% yes) | 80 | 77 | 79 |
| Sports participation (% participation in leisure time sports) | 32 | 34 | 33 |
| Number of times per week for those involved in leisure time sports | 3 (2;4) | 3 (2;4) | 3 (2;4) |
| Previously treated for PFP (%) | 32 | 23 | 28 |
| Pre-existing foot orthoses (n) | 2 | 2 | 4 |
| Pain medication for knee pain (% who replied yes) | 19 | 24 | 21 |
| Pain at rest (visual analogue scale)* | 15 (4;29) | 9 (2;22) | 13 (3;27) |
| Pain during activity (visual analogue scale)* | 52 (34;67) | 50 (35;64) | 50 (35;64) |
| Worst pain last week (visual analogue scale)* | 47 (33;69) | 48 (34;64) | 48 (34;65) |
*Median and IQR. 0–100, best to worst scale.
BMI, body mass index; PFP, patellofemoral pain.