Bone DensityOsteoporosisDensitometryAbsorptiometry, PhotonBone and BonesOsteoporosis, PostmenopausalFractures, BoneBone RemodelingLumbar VertebraeFemurFemur NeckCalcaneusBone Diseases, MetabolicRadiusOsteoporotic FracturesDiphosphonatesBone ResorptionRadiographic Image Interpretation, Computer-AssistedMammographyRadiographic Image EnhancementBone DevelopmentBone MarrowReproducibility of ResultsBone Marrow CellsBone DiseasesBone NeoplasmsTomography, X-Ray ComputedRisk FactorsGlucocorticoidsCalibrationBone RegenerationPhantoms, ImagingBreastBone TransplantationBone MatrixBone Marrow TransplantationBone Density Conservation AgentsSpineTibiaAlgorithmsBone SubstitutesOsteogenesisBone Morphogenetic ProteinsOsteocalcinBone Morphogenetic Protein 2HipArm BonesTime FactorsCalcium, DietaryPelvic BonesOsteoblastsTemporal BoneOsteoclastsAlveolar Bone LossFractures, SpontaneousParathyroid HormoneX-Ray MicrotomographyParietal BoneBone CementsAlkaline PhosphataseRetinal PigmentsSpinal FracturesMetacarpusBody WeightCalcification, PhysiologicElectrophoresis, Cellulose AcetateBiological MarkersBody CompositionOsseointegrationBiomechanical PhenomenaWeight-BearingAlendronateCalciumBone Demineralization, PathologicIliumMandibleAgingReference ValuesPostmenopauseBone CystsSensitivity and SpecificityCross-Sectional StudiesProspective StudiesMineralsCells, Cultured