Abstract
This study was performed to investigate the venous drainage in reverse island groin flaps in a rat model. Two groups of 10 rats were studied. All rats of group A had a groin reverse flap with a complete pedicle (artery and venae comitantes). In rats of group B, an arterial groin reverse flap (artery without venae comitantes) was performed. For the two groups, the perivascular tissue was excised. Nine flaps in the group A and seven flaps in the group B, survived without partial or complete necrosis. Microscopic examination showed venous dilatation in the two groups. There was no significant difference between the two groups. These results confirm that venous drainage of the arterial reverse flow flap without venae comitantes is performed by venae arteriosa. However, venae comitantes probably ensure venous drainage when they are respected.
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