A Study of Clinical Applications of Perforator-Based Propeller Flaps in Leg Reconstructive Surgery: A Single-Center Experience of 40 Cases.

Soft tissue management in lower limb poses a considerable challenge to a reconstructive plastic surgeon. Perforator-based propeller flaps can cover large wounds without sacrificing a major vascular axis and allows reconstruction using nearby similar tissues, thereby following the principle of replace like with like. This study was undertaken with the objective to look for the results of propeller flap in lower limb reconstruction and how the results can be improved. This was a retrospective study on 40 patients who underwent the reconstruction of soft tissue defects of lower limb with propeller flap. All the relevant data were collected and analyzed. Patients with soft tissue defect anywhere in the leg were included, but patients who had history of degloving injury, peripheral vascular disease, and diabetes mellitus were excluded. All these patients were divided in 2 groups according to the angle of rotation of propeller flap. Group I had 20 patients in which the flap was rotated by 150° to 180°. Group II had 20 patients, and the flap was rotated by 90° to 150°. Postoperatively, the first 2 cases in Group I showed total flap congestion and had complete necrosis, which were debrided and an alternate method was used to reconstruct. Thereafter, no patient had total flap necrosis. Minor complications were seen in 3 patients who showed transient venous congestion of the flap. Group II had no flap necrosis except for mild dehiscence, which was managed by secondary suturing. In most cases, the aesthetic result was acceptable and patients were completely satisfied. When parameters of the defect are suitable for treatment with a propeller-based local flap, this technique may be considered as the first option for surgical reconstruction. Proper planning, location of perforator with preoperative and intraoperative audio Doppler, and use of magnification would make this procedure more successful and definitely decrease the use of long-duration microvascular surgery.