TABLE 4.
Comparison of Incidence of Hip Displacement to Literature Values for Patients With Cerebral Palsy
| Current study pre-SDR | Current study at follow-up | Soo et al1 | Hagglund et al2 | |
|---|---|---|---|---|
| Sample size | 90 | 90 | 323 | 212 |
| Age range (y) | 2.5–11.6 | 3.5–31.1 | 6.5–14 | 9–16 |
| Children with MP >30%–33% | ||||
| GMFCS level I | 0 | 0 | 0 | 5 |
| GMFCS level II | 15 | 8 | 15 | 13 |
| GMFCS level III | 54 | 46 | 41 | 50 |
| GMFCS level IV | 63 | 72 | 69 | 62 |
| GMFCS level V | 56 | 78 | 90 | 68 |
GMFCS indicates Gross Motor Function Classification System; MP, migration percentage; SDR, selective dorsal rhizotomy.