Lower ExtremityVeinsVenous InsufficiencyVaricose VeinsVaricose UlcerSaphenous VeinLegStockings, CompressionUltrasonography, Doppler, DuplexVenous ValvesVenous ThrombosisFemoral VeinPhlebographyUpper ExtremityVascular Surgical ProceduresPulmonary EmbolismArteriovenous Shunt, SurgicalExtremitiesUltrasonography, Doppler, ColorAmputationLeg InjuriesChronic DiseasePortal VeinBones of Lower ExtremityTreatment OutcomePeripheral Vascular DiseasesProspective StudiesPopliteal VeinIliac VeinLeg BonesPulmonary VeinsJugular VeinsIschemiaLimb SalvagePeripheral Arterial DiseaseRenal VeinsVascular PatencyArmMesenteric VeinsUmbilical VeinsIntermittent ClaudicationKneeArterial Occlusive DiseasesFemoral ArteryLeg UlcerWalkingGaitTibial ArteriesFoot BonesHepatic VeinsSubclavian VeinPopliteal ArteryFoot InjuriesRetrospective StudiesGangreneThrombophlebitisDiabetic FootArm InjuriesBiomechanical PhenomenaTime FactorsAnkleMuscle StrengthAtherectomyAthletic InjuriesToesAnkle Brachial IndexBones of Upper ExtremityKnee JointGraft Occlusion, VascularAngiographyAnkle JointThighFootSplenic VeinVascular System InjuriesFollow-Up StudiesAxillary VeinReoperationCerebral VeinsLower Extremity Deformities, CongenitalLymphedemaSoft Tissue NeoplasmsBrachiocephalic VeinsRange of Motion, ArticularMobility LimitationSarcomaPostureRecovery of FunctionShoesHip JointPatellofemoral Pain SyndromeMuscle, SkeletalUpper Extremity Deep Vein ThrombosisRetinal VeinRisk FactorsAmputeesHemiplegiaSoft Tissue InjuriesAzygos VeinBlood Vessel Prosthesis Implantation