Bone ScrewsFracture Fixation, InternalOsseointegrationBone and BonesFracture HealingX-Ray MicrotomographyBone RemodelingBone DensitySpinal FusionInternal FixatorsBone ResorptionBone MarrowBone PlatesBone NeoplasmsBone DevelopmentBone Marrow CellsThoracic VertebraeBiomechanical PhenomenaBone DiseasesBone TransplantationScoliosisFractures, BoneLumbar VertebraeBone RegenerationAxisBone NailsCervical VertebraeFluoroscopyRange of Motion, ArticularCadaverOptical RotationSpinal DiseasesOrthopedic ProceduresSurgery, Computer-AssistedBone MatrixOrthopedic Fixation DevicesBone Marrow TransplantationBone SubstitutesSpineFemurAtlanto-Axial JointSacrumTibiaBone CementsJoint InstabilityTorqueCervical AtlasFracture Fixation, IntramedullarySpinal FracturesNeuronavigationPelvic BonesBone Diseases, Metabolic