Lumbar VertebraeSpineBone DensitySpinal DiseasesAbsorptiometry, PhotonFemur NeckLumbosacral RegionIntervertebral DiscSpinal FusionThoracic VertebraeOsteoporosisSpinal FracturesZygapophyseal JointIntervertebral Disc DisplacementSpinal InjuriesOsteoporosis, PostmenopausalBone Diseases, MetabolicSpinal StenosisCervical VertebraeSpondylolisthesisLow Back PainIntervertebral Disc DegenerationHipLordosisLaminectomyBack PainSpinal OsteophytosisWeight-BearingRange of Motion, ArticularSpinal CanalBiomechanical PhenomenaSpinal NeoplasmsOsteoarthritis, SpineSpondylolysisSacrumBone Density Conservation AgentsRadiusBone ScrewsBone and BonesLigamentum FlavumFractures, BoneTotal Disc ReplacementMagnetic Resonance ImagingInternal FixatorsFemurDecompression, SurgicalOrthopedic Fixation DevicesOrthopedic ProceduresCadaverDiskectomyRadiculopathyAlendronateEpidural SpaceTreatment OutcomeRadiographySpondylosisTomography, X-Ray ComputedDura MaterKyphosisSpinal CurvaturesBone RemodelingScoliosisSpondylitisDendritesSpinal Cord CompressionModels, AnatomicOsteocalcinPostureSynovial CystEtidronic AcidPostmenopauseSpondylitis, AnkylosingHip JointReproducibility of ResultsPelvisTuberculosis, SpinalFinite Element AnalysisIliumSpinal Nerve RootsTeriparatideProstheses and ImplantsPolyradiculopathyCalcaneusPelvic BonesProspective StudiesJoint InstabilityMyelographyDiphosphonatesBone ResorptionFollow-Up StudiesElectronics, MedicalPostoperative ComplicationsRetrospective StudiesBone TransplantationManipulation, SpinalCollagen Type ITime FactorsObserver VariationFractures, StressLigaments