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. 2022 Aug 7;58(8):1065. doi: 10.3390/medicina58081065

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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(a) In the retrograde free venous flaps, the input arterial flow (red arrow) is entering the flap through a vein against the valve; (b) In this case, more detailed in Figure 2, the flap was studied upside down with ICG green to document the revascularization pattern once the artery and the draining vein were sutured; (c) the same flap at time 0, when the ICG started flowing into the arterialized vein; (d) The flap after 5 min with diffuse revascularization. The strong stream signal in the centre is a leak from the arterialized vein.

(a) In the retrograde free venous flaps, the input arterial flow (red arrow) is entering the flap through a vein against the valve; (b) In this case, more detailed in Figure 2, the flap was studied upside down with ICG green to document the revascularization pattern once the artery and the draining vein were sutured; (c) the same flap at time 0, when the ICG started flowing into the arterialized vein; (d) The flap after 5 min with diffuse revascularization. The strong stream signal in the centre is a leak from the arterialized vein.