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The appearance of avascular necrosis (AVN) in unilateral hip dysplasia after the use of the Pavlik harness on the dysplastic and the normal contralateral sides
| Incidence of AVN on the dysplastic side | Incidence of AVN on the normal contralateral side | |||
|---|---|---|---|---|
| Results | Hips (n) | Results | Hips (n) | |
| Tönnis I | 5.2% | 35 | 2.7% | 18 |
| Tönnis II | 0.6% | 4 | 0.2% | 1 |
| Tönnis III | 1.2% | 8 | 0 | 0 |
