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第一趾蹼皮瓣是拇趾外侧面与第二趾内侧面及其相连部分的皮肤和皮下组织所构成的皮瓣，用第Ⅰ跖骨背动脉或趾底总动脉为蒂，既可用作游离移植，也可作岛状移植，以修复皮肤软组织垫缺损；关键是转移皮瓣时要避免血管蒂折成锐角。其优点是有知名的血管神经束，位置较恒定，部位隐蔽，皮肤柔软，皮下脂肪较多，外形良好，切取后不影响功能。作者用作岛状移植修复１６例麻风的第Ⅰ、Ⅱ跖骨头部溃疡，经随访只１例于１２个月后因皲裂溃疡复发，其余１５例随访４８～１２４个月无复发。
The first toe flap is a flap composed of skin and subcutaneous tissue of the lateral side of the big toe and the medial side of the second toe and the connecting portion thereof. The first toe flap is pedicled with the first metatarsal dorsal artery or the common toe artery, Free transplantation, but also for island transplantation to repair skin and soft tissue defects; the key is to avoid the flap when the transfer of acute angulation of the pedicle. Its advantage is that there are well-known vascular nerve bundles, the location is relatively constant, the site hidden, soft skin, more subcutaneous fat, good shape, cut does not affect the function. The authors used island-like transplantation for the first and second metatarsal head ulcers in 16 patients with leprosy. Only one case was followed up for recurrence of ulcer recurrence after 12 months. The remaining 15 cases were followed up for 48-12 months without recurrence.