AnklePeripheral Vascular DiseasesIntermittent ClaudicationAnkle Brachial IndexBrachial ArteryAnkle JointAnkle InjuriesBlood PressureBlood Pressure DeterminationLegUltrasonography, DopplerPressureUltrasonography, Doppler, ColorProspective StudiesDoppler EffectUltrasonography, Doppler, PulsedLateral Ligament, AnkleBlood Flow VelocityPeripheral Arterial DiseaseVaricose UlcerThromboangiitis ObliteransPhotoplethysmographySprains and StrainsArteriosclerosis ObliteransEchocardiography, Doppler, PulsedUltrasonography, Doppler, TranscranialIschemiaTibial ArteriesArterial Occlusive DiseasesEchocardiography, Doppler, ColorHydrostatic PressureLeg UlcerRegional Blood FlowPulseSeverity of Illness Index