HindlimbCranial Fossa, PosteriorMuscle, SkeletalIschemiaForelimbPosterior Cerebral ArteryLocomotionPosterior Cruciate LigamentUveitis, PosteriorNeovascularization, PhysiologicRegional Blood FlowHypothalamus, PosteriorMagnetic Resonance ImagingCatsDecerebrate StateOssification of Posterior Longitudinal LigamentSpinal CordExtremitiesBiomechanical PhenomenaMuscular AtrophyWeightlessness SimulationSpinal FusionRats, Sprague-DawleyLaser-Doppler FlowmetryBody PatterningPituitary Gland, PosteriorLens Capsule, CrystallineBrain MappingTime FactorsCollateral CirculationAmputation StumpsElectromyographyPosterior Leukoencephalopathy SyndromeThoracic VertebraeGene Expression Regulation, DevelopmentalLimb BudsElectric StimulationLumbosacral RegionRecovery of FunctionMotor NeuronsInfratentorial NeoplasmsPosterior Capsule of the LensFunctional LateralityCapillariesParietal LobeWeight-BearingSpinal Cord InjuriesDisease Models, AnimalAfferent PathwaysReflexFemoral ArteryInfarction, Posterior Cerebral ArteryMuscle ContractionRats, WistarMusclesLumbar VertebraePhysical Conditioning, AnimalCervical VertebraeHomeodomain ProteinsSciatic NerveNeural PathwaysTurtlesMuscle Fibers, Slow-TwitchCataractImage Processing, Computer-AssistedNeurons, AfferentMuscle Fibers, Fast-TwitchBone ScrewsTomography, X-Ray ComputedMovementIn Situ HybridizationMuscle Fibers, SkeletalPosterior Tibial Tendon DysfunctionGaitMorphogenesisLaminectomyMotor ActivityMice, Inbred C57BLBrainMesodermTreatment OutcomeImmobilizationPhysical StimulationCadaverCervical AtlasPosterior Thalamic NucleiKyphosisOrgan SizeAnalysis of VarianceInternal FixatorsT-Box Domain ProteinsDecompression, SurgicalChick EmbryoTibial NerveVitreous DetachmentPostureEmbryo, NonmammalianScleraPerfusionReaction Time