Distribution of the Larsen’s grades of knee joints at entry and at the three year visit
| Larsen’s grade | Baseline n (%) | Three years n (%) |
|---|---|---|
| 0 | 12 (21.8) | 7 (12.7) |
| 1 | 15 (27.3) | 16 (29.1) |
| 2 | 14 (25.5) | 11 (20.0) |
| 3 | 11 (20.0) | 13 (23.6) |
| 4 | 3 (5.5) | 7 (12.7) |
| 5 | 0 (0) | 1 (1.8) |
| Total | 55 (100) | 55 (100) |