Use of a mechanical leech in a reverse-flow radial forearm flap: Case report

The reverse-flow radial forearm flap provides excellent coverage for distal upperlimb defects. It is simply raised and does not require microsurgical skills. However, since its vascular pedicle is reversed, its venous outflow can be significantly diminished because of the venous valves. The authors present the case of a 16-year-old patient with a sagittal amputation of the radial aspect of the right thumb, who manifested at the time of surgery ma rked venous engorgement of a reverse-flow radial forearm flap. This was suc cessfully relieved by the placement of a mechanical leech consisting of a S ilastic rubber catheter-of the kind used to gain central vascular access in newborns-introduced in the lumen of the reversed vein at the extremity of the flap. This permitted intermittent evacuation of blood from the flap pos toperatively, contributing to the success of this procedure. The technique used is detailed and pertinent literature is reviewed.