Questionnaire structure and contents
| Question number | Question content |
|---|---|
| 1 | General sports experience before the injury (years) |
| 2 | Pre-injury competitive level (local, national, or international) |
| 3 | Change in competitive level; pre-injury versus 12 months after surgery |
| 4 | Change in competitive level; pre-injury versus present follow up |
| 5 | Cincinnati sports activity scale (general sports activity) |
| 6–8 | Cincinnati sports function scales |
| 9 | Regarding subsequent surgical intervention in the same knee |