Assessment schedule for the control group
| Blood test | X-rays, DXA and MRI | 25(OH) D level | Hip range of motion | Faces Pain Scale | Questionnaires: Harris hip score and PODCI | |
| Screening | X | X | X | X | X | X |
| 3 months | X | |||||
| 6 months | X | X | X | X | X | |
| 9 months | X | |||||
| 12 months | X | X | X | X | X | X |
| 18 months | X | |||||
| 24 months | X | X | X | X | X |
DXA, Dual-energy X-ray absorptiometry; PODCI, Global Paediatric Outcomes Data Collection Instrument questionnaires.