Spinal FusionPseudarthrosisIntervertebral Disc DegenerationLumbar VertebraeInternal FixatorsDiskectomyIntervertebral DiscCervical VertebraeSpinal DiseasesTotal Disc ReplacementArthroplastyBone ScrewsSpondylosisIntervertebral Disc DisplacementSpinal StenosisSpondylolisthesisTibiaFibulaDecompression, SurgicalBone TransplantationThoracic VertebraeOrthopedic Fixation DevicesIlizarov TechniqueThoracic NervesRange of Motion, ArticularKyphosisTibial FracturesPostoperative ComplicationsHalluxProstheses and ImplantsFoot Deformities, AcquiredScoliosisCarpal BonesFractures, StressTreatment OutcomeZygapophyseal JointFollow-Up StudiesClavicleNeurofibromatosis 1Autonomic Fibers, PreganglionicBiomechanical PhenomenaWeight-BearingAllograftsExternal FixatorsRetrospective StudiesArthrodesisSpineOsteotomyOrthopedic Procedures