| CP | Cerebral palsy |
| GDI | Gait Deviation Index |
| GMFCS | Gross Motor Function Classification System |
| GMFM | Gross Motor Function Measure |
| GMFM-D | Gross Motor Function Measure Dimension D |
| GMFM-66 | Gross Motor Function Measure 66 |
| IGA | Instrumented Gait Analysis |
| MLS | Multi-level surgery |
| PR | Proxy-reported |
| PRO | Patient-reported outcome |
| PROMIS | Patient-Reported Outcomes Measurement Information Systems |
| SD | Standard deviation |
| SR | Self-reported |
| WA | Walking activity |
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