Venous InsufficiencyLower ExtremityVaricose UlcerLegVaricose VeinsVenous PressurePhlebographyFemoral VeinUltrasonography, Doppler, DuplexChronic DiseaseLeg UlcerPostphlebitic SyndromeBandagesSaphenous VeinGravity SuitsAdrenal InsufficiencyPlethysmographyVeinsIliac VeinPopliteal VeinUpper ExtremityAzygos VeinRenal InsufficiencyVascular Surgical ProceduresStockings, CompressionFoot DermatosesVenous ThrombosisExtremitiesAmputationVenous ValvesUltrasonography, Doppler, ColorLeg InjuriesExocrine Pancreatic InsufficiencyJugular VeinsPostthrombotic SyndromeTreatment OutcomeCerebral VeinsSclerotherapyTourniquetsPlacental InsufficiencyEdemaBones of Lower ExtremityLaser TherapyAnkleHealth ResortsVascular PatencyPeripheral Vascular DiseasesAirSeverity of Illness IndexTime FactorsAnatomic VariationWound HealingUltrasonography, DopplerThrombophlebitisFootPhotoplethysmographyPeriostitisRegional Blood FlowLeg BonesConstriction, PathologicProspective StudiesIschemiaRetrospective StudiesMultiple SclerosisRutinVascular MalformationsFollow-Up StudiesSclerosing SolutionsCatheterization, PeripheralOnychomycosisVascular DiseasesLimb SalvageNursing AssessmentSubcutaneous TissuePeripheral Arterial DiseaseRisk FactorsLigationArmPostoperative ComplicationsMultiple Sclerosis, Chronic ProgressiveSkinEndoscopyPressureMultiple Sclerosis, Relapsing-RemittingArterial Occlusive DiseasesIntermittent ClaudicationChi-Square DistributionHemodynamicsKneeWalkingBlood Flow VelocityPrimary Ovarian InsufficiencyGaitTibial ArteriesFemoral ArteryRecurrenceHepatic InsufficiencyFoot BonesGangreneCase-Control Studies