Bone ScrewsAbsorbable ImplantsFracture Fixation, InternalOsseointegrationBone and BonesFracture HealingX-Ray MicrotomographyPolydioxanonePolypropylenesBone SubstitutesBiocompatible MaterialsForeign-Body ReactionCatgutPolyglactin 910Guided Tissue Regeneration, PeriodontalBone RemodelingMaterials TestingCalcium PhosphatesBone CementsPolyestersBone DensitySurgical MeshHerniorrhaphySpinal FusionInternal FixatorsBone ResorptionBone MarrowBone PlatesBone NeoplasmsBone DevelopmentMembranes, ArtificialBone Marrow CellsBiomechanical PhenomenaThoracic VertebraeTreatment OutcomeBone TransplantationBone DiseasesScoliosisLumbar VertebraeFractures, BoneBone RegenerationAxisCervical VertebraeBone NailsCadaverFluoroscopyRange of Motion, ArticularOptical RotationSpinal DiseasesOrthopedic ProceduresSurgery, Computer-AssistedBone MatrixOrthopedic Fixation DevicesBone Marrow TransplantationFemurSpineAtlanto-Axial JointTibiaSacrumJoint InstabilityTorqueSpinal FracturesCervical AtlasFracture Fixation, IntramedullaryNeuronavigationPelvic BonesTitaniumWeight-BearingTomography, X-Ray ComputedBone Diseases, MetabolicBone Wires