OsteoporosisOsteoporosis, PostmenopausalPostmenopauseBone DensityBone Density Conservation AgentsFractures, BoneOsteoporotic FracturesEstrogen Replacement TherapyAbsorptiometry, PhotonDiphosphonatesAlendronateBone and BonesFractures, SpontaneousBone Diseases, MetabolicEtidronic AcidTeriparatideMenopauseSpinal FracturesBone RemodelingFemur NeckBone ResorptionRaloxifeneLumbar VertebraeEstrogensRisk FactorsHip FracturesSelective Estrogen Receptor ModulatorsPremenopauseBreast NeoplasmsEstrogens, Conjugated (USP)Hormone Replacement TherapyCalcium, DietaryOvariectomyDisease ManagementAromatase InhibitorsVitamin DCalcaneusFemurOsteocalcinEstradiolSpineOsteoclastsHipTreatment OutcomeOsteoblastsParathyroid HormoneGlucocorticoidsRadiusCalcitoninTamoxifenOsteogenesisRANK LigandProspective StudiesDouble-Blind MethodNitrilesClimactericIsoflavonesCollagen Type IMedroxyprogesterone AcetateBiological MarkersEstroneTriazolesAge FactorsSex Hormone-Binding GlobulinAlkaline PhosphataseRisk AssessmentGonadal Steroid HormonesNorpregnenesAntineoplastic Agents, HormonalProgestinsOsteoprotegerinDensitometryCase-Control StudiesFollow-Up StudiesCross-Sectional StudiesBone DiseasesWomen's HealthIliumCohort StudiesAccidental FallsSpinal InjuriesPerimenopauseQuestionnairesBody Mass IndexHot FlashesMedroxyprogesteronePhytoestrogensTime FactorsMetacarpusRetrospective StudiesCalciumDietary SupplementsMineralsUterine HemorrhageReceptors, EstrogenPrevalenceIncidenceMass ScreeningAdministration, OralPatient Care Management