QuadriplegiaSpinal Cord InjuriesParaplegiaPinch StrengthWheelchairsBrain-Computer InterfacesTendon TransferAutonomic DysreflexiaCervical VertebraeCystostomyElbowArmTenodesisElectric Stimulation TherapySurgical TapeHypoaldosteronismHandPhysical and Rehabilitation MedicineLongitudinal LigamentsHand StrengthTractionMuscle SpasticityTracheostomyUrinary Bladder, NeurogenicSocial ConditionsMovementUrinary CatheterizationElectrodes, ImplantedMotor CortexParalysisActivities of Daily LivingMicroelectrodesElectromyographyPostureUser-Computer InterfacePsychomotor PerformanceRecovery of FunctionBiomechanical PhenomenaTreatment OutcomeMagnetic Resonance ImagingFollow-Up StudiesMuscle, SkeletalSeverity of Illness Index