Femur NeckFemurBone DensityAbsorptiometry, PhotonLumbar VertebraeOsteoporosisSpineNeckHead and Neck NeoplasmsSpinal DiseasesNeck PainLumbosacral RegionIntervertebral DiscSpinal FusionThoracic VertebraeFemoral FracturesSpinal FracturesBone Diseases, MetabolicOsteoporosis, PostmenopausalZygapophyseal JointSpinal InjuriesIntervertebral Disc DisplacementFemoral Neck FracturesCervical VertebraeHipSpinal StenosisSpondylolisthesisLow Back PainFemur HeadBone and BonesBiomechanical PhenomenaWeight-BearingNeck InjuriesIntervertebral Disc DegenerationRange of Motion, ArticularLordosisBone ScrewsBone Density Conservation AgentsLaminectomyFemoral NeoplasmsBack PainFractures, BoneRadiusSpinal OsteophytosisCadaverBone RemodelingSpinal CanalSpinal NeoplasmsOrthopedic ProceduresSacrumAlendronateOsteoarthritis, SpineTomography, X-Ray ComputedSpondylolysisInternal FixatorsHip JointMagnetic Resonance ImagingLigamentum FlavumTotal Disc ReplacementTreatment OutcomeOrthopedic Fixation DevicesDecompression, SurgicalFractures, SpontaneousRadiographyTibiaRadiculopathyDiskectomyFinite Element AnalysisSpondylosisOsteocalcinModels, AnatomicEpidural SpaceBone TransplantationDura MaterProstheses and ImplantsIliumKyphosisPostureDiaphysesSpinal CurvaturesScoliosisTractionSpondylitisBone ResorptionRetrospective StudiesDendritesEtidronic AcidSpinal Cord CompressionPostoperative ComplicationsPostmenopauseFollow-Up StudiesFracture Fixation, InternalPelvic BonesFractures, StressPelvisTeriparatideDiphosphonatesFracture Fixation, Intramedullary