Hip DislocationHip Dislocation, CongenitalDislocationsHip JointFemoracetabular ImpingementShoulder DislocationArthroplasty, Replacement, HipHip InjuriesOrthopedic ProceduresFemur HeadBone RetroversionKnee DislocationAcetabulumHip ProsthesisHipOsteotomyJoint CapsuleRange of Motion, ArticularLegg-Calve-Perthes DiseasePatellar DislocationOsteoarthritis, HipHip FracturesCerebral PalsyReoperationFemurRecovery of FunctionTreatment OutcomeRetrospective StudiesTractionProsthesis FailureFollow-Up StudiesLens SubluxationAcromioclavicular JointElbow JointJoint InstabilityManipulation, OrthopedicSplintsProsthesis DesignTime FactorsFemur Head NecrosisLigaments, ArticularFemoral Neck FracturesSternoclavicular JointAtlanto-Axial JointWrist InjuriesAtlanto-Occipital JointTarsal JointsPatellaFractures, BoneShoulder JointBone Diseases, DevelopmentalPostoperative ComplicationsUlnaSpinal InjuriesFracture Fixation, InternalCasts, SurgicalBone Wires