Orthotic DevicesHip Dislocation, CongenitalFemur Head NecrosisTractionSplintsBracesHip JointFemur HeadAdaptive ImmunityGaitWalkingAcetabulumEquipment DesignModels, BiologicalBiomechanical PhenomenaMovementNeoplasmsTime FactorsInfant, NewbornModels, MolecularInternetTreatment OutcomeComputational BiologySoftwareSignal TransductionFollow-Up StudiesMolecular Sequence Data