Baseline characteristics of the total group of patients and those available at 6-year follow-up
| Baseline characteristic | All included patients at baseline (n=134) | Available at 6-year follow-up (n=78) | Agreed to 6-year MRI and radiography (n=47) |
|---|---|---|---|
| General | |||
| Age in years, mean±SD | 40.3±12.2 | 41.6±11.2 | 43.7±10.5 |
| Male, n (%) | 74 (55.2) | 38 (48.8) | 23 (48.9) |
| Diagnosis on MRI | |||
| No lesion or effusion, n (%) | 15 (11.2) | 8 (10.3) | 3 (6.4) |
| Contusion (effusion with no ligament or meniscal lesion), n (%) | 37 (27.6) | 16 (20.5) | 9 (19.1) |
| Medial collateral ligament lesion, n (%) | 35 (26.1) | 24 (30.8) | 17 (36.2) |
| Lateral collateral ligament lesion, n (%) | 8 (6.0) | 6 (7.7) | 4 (8.5) |
| Anterior cruciate ligament lesion, n (%) | 28 (20.9) | 20 (25.6) | 12 (25.5) |
| Posterior cruciate ligament lesion, n (%) | 6 (4.5) | 2 (2.6) | 1 (2.1) |
| Meniscal tear | 47 (35.1) | 29 (37.2) | 17 (36.2) |
| Knee symptoms | |||
| Sport activity as cause, n (%) | 61 (45.5) | 34 (43.6) | 20 (42.6) |
| Knee pain NRS (0–10), mean±SD | 4.8±2.4 | 4.6±2.5 | 4.7±2.4 |
| Lysholm knee function score (0–100), mean±SD | 63.7±19.8 | 62.2±20.7 | 61.3±21.2 |