TeriparatideBone Density Conservation AgentsAlendronateOsteoporosis, PostmenopausalOsteoporosisExostosesBone DensityOsteoporotic FracturesNafarelinAdministration, OralFractures, BoneBone RemodelingRetreatmentEtidronic AcidInjections, SubcutaneousSpinal FracturesAnabolic AgentsNail DiseasesOsteochondromaDiphosphonatesLumbar VertebraeDrug SubstitutionDose-Response Relationship, DrugDrug Administration ScheduleBack Pain