Background: When hip displacement in children with cerebral palsy (CP) is identified early,
treatment is more successful. The standard test is a radiograph of the pelvis measuring the
migration index (MI). Our study aims to review published literature of the natural history of
hip dislocation among children with CP and to define related risk factors to develop
screening criteria for early recognition. Methods: The review included 10 studies with
sample sizes greater than 20 children with CP below18 years who had hips with no surgical …