Figure 2. Triplex Doppler sonogram of some studied cases.

a- The right posterior tibial artery has been attenuated by atherosclerosis with triphasic to biphasic waveforms and no definite segment of occlusion; b- The right posterior tibial artery is attenuated by atherosclerosis without definite obstruction; c- The left posterior tibial artery is patent with segmental attenuation. There are triphasic to biphasic waveforms; d- The left anterior tibial artery is attenuated by atherosclerosis without definite obstruction.