Maximizing the flap inflow in a foot reconstruction: ultrasonographic evaluation of artery flow in accordance with the angle of the ankle

摘要: Adequate arterial inflow is mandatory for a successful free tissue transfer. Maximizing this inflow appears to be especially important during distal lower extremity reconstruction, where perfusion pressures can be significantly lower than in the trunk or head and neck. In the current study, the authors used color and pulsed-wave Doppler ultrasonography to analyze blood flow volumes in the foot in accordance with the ankle position. Twenty feet of 10 healthy subjects were included in the analyses. All subjects were examined by Doppler ultrasonography at three different ankle angles (dorsiflexion at 90 degrees, relaxed position, and complete plantar flexion). The average flow volumes of the dorsalis pedis artery varied dramatically at the different ankle positions, as follows: dorsiflexion, 19.81±3.88 ml/minute; relaxed position, 11.71±4.72 ml/minute; and plantar flexion, 3.47±1.41 ml/minute. The average flow volume of …