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 StudiesTractionFollow-Up StudiesProsthesis FailureLens SubluxationAcromioclavicular JointElbow JointJoint InstabilityManipulation, OrthopedicTime FactorsSplintsProsthesis DesignLigaments, ArticularFemur Head NecrosisFemoral Neck FracturesSternoclavicular JointAtlanto-Axial JointWrist InjuriesAtlanto-Occipital JointTarsal JointsPatellaBone Diseases, DevelopmentalPostoperative ComplicationsFractures, BoneShoulder JointUlnaSpinal InjuriesCasts, SurgicalFracture Fixation, InternalBone Wires