Spastic Paraplegia, HereditaryParaplegiaParaparesis, SpasticMuscle SpasticityPedigreeSpinal Cord IschemiaAdaptor Protein Complex 4Genes, RecessiveGenes, DominantAdenosine TriphosphatasesQuadriplegiaCerebellar AtaxiaParaparesis, Tropical SpasticSpinal Cord InjuriesReflex, BabinskiAgenesis of Corpus CallosumTuberculosis, SpinalParaparesisAortic Aneurysm, ThoracicLod ScoreChromosomes, Human, Pair 2Pelizaeus-Merzbacher DiseaseMutation, MissenseSpasmSpinal CordSpinal Cord CompressionMutationHuman CharacteristicsHereditary Sensory and Motor NeuropathyCerebral PalsyOptic AtrophyAge of OnsetGenetic LinkageGenetic HeterogeneityPhenotypeLaminectomySyndromeExomeLeukocyte L1 Antigen ComplexIntellectual DisabilitySpinocerebellar DegenerationsConsanguinityHysteriaWheelchairsATP-Dependent ProteasesMyelin Proteolipid ProteinMotor NeuronsThoracic VertebraeCorpus CallosumChromosome MappingDNA Mutational AnalysisHeterozygoteMyelographyMetalloendopeptidasesGTP PhosphohydrolasesAxonsCrutchesSex Chromosome AberrationsAortographyMicrotubulesMagnetic Resonance ImagingMotor Neuron DiseaseBlood Vessel Prosthesis ImplantationOptic Atrophies, HereditaryMyelitis, TransverseAneurysm, DissectingHydrocephalusNeural ConductionX ChromosomeHaplotypesChromosomes, Human, Pair 14ArachnoiditisTabes DorsalisEpidural SpaceChromosomes, Human, Pair 15Codon, Nonsense