Colgajo obispo y colgajo sigma para defectos quirúrgicos en zonas anatómicas de elevada tensión

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Background: The reconstruction of surgical defects in high-tension anatomical regions is challenging due to the ischemia and subsequent necrosis associated with tension closure. Research on new flaps capable of closing these defects exerting less tension would be a tremendous advancement in dermatological surgery.Patients and methods: We conducted a multicenter, retrospective study that used 2 new flaps—the bishop and the sigma ones—to repair surgical defects in high-tension regions such as the scalp, lower extremities, and the nasal pyramid. The bishop flap was used in 9 patients, 5 of whom exhibited their lesion in the nasal pyramid, 2 in the legs and another 2 in the scalp. The sigma flap was used in 6 patients, 5 of whom exhibited scalp lesions and 1 leg lesion.Results: Uneventful and excellent results were obtained in all 15 patients due to infection, dehiscence, or necrosis.Conclusions: Both the bishop and the sigma flaps are a good alternative to repair surgical defects in high-tension regions such as the scalp, lower extremities, or the nasal pyramid.