VertebroplastyFractures, CompressionPolymethyl MethacrylateSpinal FracturesBone CementsKyphoplastyFractures, SpontaneousThoracic VertebraeHealth Care CostsSpineExtravasation of Diagnostic and Therapeutic MaterialsOsteoporotic FracturesSpinal NeoplasmsOsteoporosisBack PainLumbar VertebraeFluoroscopyCosts and Cost AnalysisSurgical Procedures, Minimally InvasiveMethylmethacrylateRadiology, InterventionalPain MeasurementOrthopedic ProceduresDrug CostsCost of IllnessKyphosisRadiography, InterventionalInjections, SpinalSpinal CanalAxisSpinal DiseasesCementoplastyTreatment OutcomeInjectionsPolymethacrylic AcidsPainSpinal Cord CompressionEmbolism, FatRadiographyRetrospective StudiesPlacebo EffectCost ControlTomography, X-Ray ComputedPostoperative ComplicationsDirect Service CostsPulmonary EmbolismForeign-Body MigrationFollow-Up StudiesVirginiaFractures, ComminutedCost SharingMethylmethacrylatesCost-Benefit AnalysisSpinal InjuriesThermoluminescent DosimetryArthroplastyCost AllocationCalcium PhosphatesHemangiomaMagnetic Resonance ImagingLaminectomyThermal ConductivityMinnesotaFracture FixationAnesthesia, LocalPain ManagementSacrumNeedles