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Primary predisposing factors for patellofemoral instability.
| Variable | N (%) |
|---|---|
| Patellar height: Caton-Deschamps (mean ± SD) | 1.27 ± 0.7 |
| ≤1.2 | 3 (42.9) |
| ≥1.3 (high patella) | 4 (57.1) |
| Trochlear dysplasia | |
| Absent | 2 (28.6) |
| Type A | 3 (42.9) |
| Type B | 0 |
| Type C | 2 (28.6) |
| TT-TG distance (mean ± SD) | 21.71 ± 1.38 |
| ≤15 mm | 0 |
| ≥16 mm | 7 (100) |
