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Femoral head height difference (FHHD) in the patients with distinct overgrowth. Values are number of hips
| FHHD, mm | Intervention for overgrowth a (n = 24) | No intervention for overgrowth b (n = 20) | Total |
|---|---|---|---|
| > 20 | 3 | 2 | 5 |
| > 15 | 14 | 9 | 23 |
| > 10 | 24 | 20 | 44 |
aFHHD was measured at intervention.
bFHHD was measured at skeletal maturity.
