The purpose of this study was to provide some guidelines with respect to th
e location of the facial vessels, display the potential inverted blood flow
of the facial artery, and reemphasize the value of color Doppler ultrasoun
d studies in flap planning. An anatomic study of the facial artery and vein
was done using color Doppler ultrasonography in 12 adults. The artery and
the vein were located together at the lower border of the mandible. Around
the oral commissure and under the nasal ala, they were located apart from e
ach other with variable distances. This divergence of the facial vein from
the artery is important information in the planning of axial pattern flaps.
Furthermore, the reverse flow was observed in 12 patients after the blood
Row of the facial artery was stopped by applying pressure manually at the l
ower border of the mandible. Observation of the reversed flow confirms the
possibility of safe elevation of a retrograde flow-arterialized flap based
on the distal portion of the facial artery.