Spastic Paraplegia, HereditaryParaplegiaParaparesis, SpasticMuscle SpasticityPedigreeAdaptor Protein Complex 4Genes, RecessivePsychiatric Status Rating ScalesGenes, DominantAdenosine TriphosphatasesParaparesis, Tropical SpasticCerebellar AtaxiaReflex, BabinskiAgenesis of Corpus CallosumSpasmLod ScoreSpinal Cord IschemiaMutation, MissensePelizaeus-Merzbacher DiseaseChromosomes, Human, Pair 2Cerebral PalsyAge of OnsetMutationHuman CharacteristicsHereditary Sensory and Motor NeuropathyQuadriplegiaOptic AtrophyPhenotypeGenetic LinkageSyndromeGenetic HeterogeneitySpinal CordSpinal Cord InjuriesExomeLeukocyte L1 Antigen ComplexIntellectual DisabilitySpinocerebellar DegenerationsBrief Psychiatric Rating ScaleConsanguinitySeverity of Illness IndexATP-Dependent ProteasesMyelin Proteolipid ProteinChromosome MappingCorpus CallosumHeterozygoteDNA Mutational AnalysisMotor NeuronsMagnetic Resonance ImagingTuberculosis, SpinalMetalloendopeptidasesReproducibility of ResultsTreatment OutcomeGTP PhosphohydrolasesParaparesisAortic Aneurysm, ThoracicAxonsPsychometricsSex Chromosome AberrationsMicrotubulesSpinal Cord CompressionMotor Neuron DiseasePain MeasurementOptic Atrophies, HereditaryHydrocephalusBrainLaminectomyQuestionnairesX ChromosomeNeural ConductionNeurologic ExaminationHaplotypesDisability EvaluationChromosomes, Human, Pair 14Equinus DeformityDepressive Disorder, MajorCodon, NonsenseChromosomes, Human, Pair 15HemiplegiaParkinson Disease