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Perforator Free Flap Coverage of Chronic Lower Extremity Ulcers in Patients With Autoimmune Diseases Under Immunosuppression.
International Journal of Lower Extremity Wounds 2020 May 18
Objectives. Lower extremity ulcers are quite common in patients with autoimmune diseases. Due to chronic use of immunosuppressants, these wounds may develop into deeper wounds resulting in exposure of bone or tendon, which in turn may require free tissue transfers for coverage. The author reviewed perforator free flap transfers performed in this group of patients and analyzed the results. Methods. A retrospective review was performed on all patients who underwent perforator free flap transfer for coverage of lower extremity ulcers without trauma, over a 10-year period. Patient demographics, administered immunosuppressants, and flap and donor site complications were analyzed. Results. Twenty-two perforator free flap transfers were performed in patients with autoimmune diseases, including 18 thoracodorsal perforator flaps, 2 anterolateral thigh flaps, and 2 deep inferior epigastric artery flaps. There was no total flap loss, but there was a high rate of partial flap necrosis (40.9%) and wound dehiscence (40.9%). Intake of corticosteroids was significantly associated with postoperative complications ( P < .05). Conclusion. As partial loss of flap and wound dehiscence is much more common in this group of patients, treatment may take longer, and a fully informed consent should be obtained preoperatively. Surgeons should not avoid performing perforator free flap transfers in patients with autoimmune diseases under immunosuppression; instead, much more preparation and caution are required.
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