Bone ScrewsFracture Fixation, InternalOsseointegrationMetalsBone and BonesFracture HealingX-Ray MicrotomographyBone RemodelingBone DensitySpinal FusionInternal FixatorsBone ResorptionBone MarrowBone PlatesBone NeoplasmsBone DevelopmentBone Marrow CellsBone DiseasesBone TransplantationThoracic VertebraeFractures, BoneBone RegenerationBone NailsLumbar VertebraeAxisScoliosisFluoroscopyCervical VertebraeSpinal DiseasesBone MatrixSurgery, Computer-AssistedOrthopedic ProceduresBone Marrow TransplantationBone SubstitutesCadaverOrthopedic Fixation DevicesSacrumCervical AtlasBone CementsBiomechanical PhenomenaSpinal FracturesAtlanto-Axial JointTitaniumNeuronavigationFracture Fixation, IntramedullarySpineFemurBone Diseases, Metabolic