Table 1.
Demographic data
| Case | Age (years) | Sex | Location | Diagnosis | Duration until surgery (months) | Fragment size (cm2) |
|---|---|---|---|---|---|---|
| 1 | 15 | M | Lt MFC | OCD (II) | 5 | 4 |
| 2 | 15 | F | Lt MFC | OCD (III) | 4 | 3 |
| 3 | 15 | M | Lt LFC | OCD (IV) | 3 | 4 |
| 4 | 21 | M | Lt LFC | OCD (IV) | 15 | 6 |
| 5 | 62 | M | Lt MFC | SONK (3) | 12 | 6 |
| 6 | 64 | F | Lt MFC | SONK (3) | 6 | 6 |
| 7 | 65 | F | Rt MFC | SONK (3) | 10 | 3 |
| 8 | 66 | M | Lt MFC | SONK (3) | 9 | 6 |
Case 3: OCD occurred 5 years after partial excision of a discoid lateral meniscus. Case 4: OCD progressed one year after subtotal excision of discoid lateral meniscus. Knee OCD was evaluated by ICRS OCD classification (I–IV) [13]. SONK was assessed by Koshino’s radiological stage (1–4) [9]. MFC, medial femoral condyle. LFC, lateral femoral condyle