The number (%) and the grade (0–2) of the MR detected cartilage defects in the PFJ
| MR grade | Medial patella | Lateral patella | Medial femur | Lateral femur |
|---|---|---|---|---|
| 0 | 24 (42) | 29 (51) | 41 (72) | 43 (75) |
| 1 | 11 (19) | 17 (30) | 10 (18) | 9 (16) |
| 2 | 22 (39) | 11 (19) | 6 (10) | 5 (9) |
| Total | 57 | 57 | 57 | 57 |