[Evaluation of the insufficient perforant vein using color-coded duplex ultrasound].

With color-duplexsonography the simultaneous visualisation of the vessel anatomy, the flow and reflux in insufficient perforating veins, and the corresponding superficial and deep veins is possible. Insufficient perforating veins may have different pathogenetic reasons. We differentiate three groups of insufficient perforating veins (IPV). The different kinds of insufficient perforating veins require different therapeutical consequences.