VertebroplastyFractures, CompressionPolymethyl MethacrylateSpinal FracturesBone CementsThoracic VertebraeLumbar VertebraeKyphoplastySpineFractures, SpontaneousSpinal NeoplasmsCervical VertebraeOsteoporosisOsteoporotic FracturesBack PainExtravasation of Diagnostic and Therapeutic MaterialsFluoroscopySurgical Procedures, Minimally InvasiveKyphosisSpinal DiseasesOrthopedic ProceduresSpinal CanalMethylmethacrylatePain MeasurementRadiology, InterventionalSacrumInjections, SpinalRadiography, InterventionalSpinal Cord CompressionAxisCementoplastyTreatment OutcomeSpinal FusionRadiographyTomography, X-Ray ComputedInjectionsPainPolymethacrylic AcidsIntervertebral DiscSpinal InjuriesRetrospective StudiesEmbolism, FatCompressive StrengthScoliosisLaminectomyCadaverBiomechanical PhenomenaPlacebo EffectPostoperative ComplicationsMagnetic Resonance ImagingFinite Element AnalysisFollow-Up StudiesRibsDecompression, SurgicalHemangiomaForeign-Body MigrationPulmonary EmbolismWeight-BearingFractures, ComminutedVirginiaCalcium PhosphatesMethylmethacrylatesCervical AtlasBone ScrewsThermoluminescent DosimetryReconstructive Surgical ProceduresArthroplastySpondylolysisInternal FixatorsThermal ConductivityFracture FixationAnesthesia, LocalPain ManagementMinnesota