Bone DensityOsteoporosisDensitometryAbsorptiometry, PhotonBone and BonesLumbar VertebraeFemurOsteoporosis, PostmenopausalFractures, BoneBone Diseases, MetabolicRadiusCalibrationBlood Protein ElectrophoresisBone RemodelingRadiographic Image Interpretation, Computer-AssistedMammographyRadiographic Image EnhancementComputersReproducibility of ResultsBone ResorptionTomography, X-Ray ComputedPhantoms, ImagingBone DevelopmentBreastBone MarrowFemur NeckBone DiseasesAlgorithmsBone Marrow CellsBone Density Conservation AgentsRisk FactorsBone NeoplasmsElectrophoresis, Polyacrylamide GelBone RegenerationTibiaSpineHipCalcium, DietaryBone TransplantationArm BonesCalcaneusBone MatrixOsteocalcinBone Marrow TransplantationDiphosphonatesOsteogenesisPelvic BonesTime FactorsMetacarpusBone SubstitutesAlkaline PhosphataseWeight-BearingAlendronateBiomechanical PhenomenaX-Ray MicrotomographyBone Morphogenetic Protein 2OsteoblastsMandibleBone Demineralization, PathologicOsteoclastsParathyroid HormoneOsseointegrationAlveolar Bone LossPopulation DensityBone Morphogenetic Proteins