Muscular Atrophy, SpinalSpinal Muscular Atrophies of ChildhoodSurvival of Motor Neuron 1 ProteinAtrophySMN Complex ProteinsMuscular AtrophySurvival of Motor Neuron 2 ProteinSpinal CordMuscular Disorders, AtrophicBulbo-Spinal Atrophy, X-LinkedSpinal Cord InjuriesNeuronal Apoptosis-Inhibitory ProteinCyclic AMP Response Element-Binding ProteinMotor NeuronsAnterior Horn CellsRNA-Binding ProteinsNerve Tissue ProteinsSpinal Cord DiseasesOptic AtrophyMotor Neuron DiseaseRibonucleoproteins, Small NuclearDEAD Box Protein 20Spinal Nerve RootsChromosomes, Human, Pair 5Disease Models, AnimalInjections, SpinalExonsSpinal NervesMultiple System AtrophyCoiled BodiesAnesthesia, SpinalReceptors, AndrogensnRNP Core ProteinsSpinal Cord NeoplasmsSpinal CanalSpinal Cord CompressionSpinal DiseasesMuscle, SkeletalSpinal NeoplasmsPedigreeMagnetic Resonance ImagingMice, TransgenicSpinal StenosisBulbar Palsy, ProgressiveSpinal FusionElectromyographyMuscle WeaknessPhenotypeNerve DegenerationCharcot-Marie-Tooth DiseaseHeterozygote DetectionNeuromuscular DiseasesContractureOlivopontocerebellar AtrophiesNeural ConductionAxonsGlycine-tRNA LigaseArthrogryposisGene DeletionVocal Cord ParalysisMutationSpinal InjuriesHomozygoteGyrate AtrophySeverity of Illness IndexTrinucleotide Repeat ExpansionTime FactorsNeuromuscular JunctionAmyotrophic Lateral SclerosisNeuromuscular Junction DiseasesRNA SplicingGanglia, SpinalSpinal Cord IschemiaGenes, RecessiveSural NerveBrainGenetic LinkageMotor ActivityTrinucleotide RepeatsGeographic AtrophyGene DosageTreatment OutcomeGenes, DominantIntranuclear Inclusion BodiesMyelographyParaplegiaInclusion BodiesFasciculationSpineMyoclonic Epilepsies, ProgressiveThoracic VertebraeDisease ProgressionChemistry, AnalyticUlnar NerveRespiratory ParalysisTuberculosis, SpinalLaminectomyMusclesPrenatal DiagnosisAge of Onset