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UGG Boots Outlet 改进的&#3

 
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PostPosted: Thu 19:22, 10 Mar 2011    Post subject: UGG Boots Outlet 改进的&#3

改进的腓肠浅动脉皮瓣临床应用
切断皮瓣远端的血管、神经时.应多切取长约lcm.避免皮瓣远端的皮缘坏死。12.23对皮瓣的血管神经蒂的切取形式一种是筋膜蒂.这适应于受区外周皮肤条件较好的病倒。皮肤比较松弛、易分离.包埋覆盖筋膜蒂不会因缝合强力过大而影响血液循环。另一种是筋膜皮蒂.将蒂部的皮肤连同下方的血管神经一同切取.宽度约为2.5~30cm。这种方法适用于受区皮肤条件差,[link widoczny dla zalogowanych],炎性或瘴痕明显的病例。1.22.4如甩顺行转移皮瓣,皮肤缺损区位于小腿上段,在上胫腓骨间钝性分离做一遂道.将皮瓣和筋膜血管神经蒂由此穿过,使皮瓣覆盖创面。作者单位:宁夏医学院附属医院创伤骨科.宁夏750004作者简升:贾维东(1959-).男.黑龙江人,耐主任医师,硬士研究生导师。研究方向:骨创伤、伤残重建。电话:(0951]4091488—4433E—mBiI:JWeldong@263.net2讨论逆行皮瓣的血循坏是一种非正常生理性的循环.这种血循环在一定程度上有它的局限性。特别是静脉回流,在皮瓣切取后,皮瓣的瘀血较为常见,而且皮瓣切取越大,[link widoczny dla zalogowanych],蒂部扭转角度越大.皮瓣的褒血也越为明显而顺行皮瓣因其血循环是一种正常的生理性循环,上述这种皮瓣的血循环障碍并不明显,[link widoczny dla zalogowanych]。见于上述皮瓣成活的机理通过临床应用和观察.我们认为小腿后侧脖肠浅动脉皮瓣(特别是逆行皮瓣)静脉回谎是关键,皮瓣褒血常常是皮瓣血循环不良的表现。由于皮瓣静脉回漉不畅.动脉供血阻力增加.皮缘处供血不足或缺乏,形成皮缘坏死的原因之一。另外,由于皮瓣筋膜血管神经蒂的扭转,同样叉加重了皮瓣血循环障碍。这就导致了皮瓣的成活困难或皮瓣的坏死。为此我们改进了皮瓣的切取方法和覆盖形式:(1)皮瓣的探筋膜层切取要大于皮瓣皮缘05~08cm.并保证其不与皮缘分离。(2)避免筋膜蒂旋转点处的过度扭转.要谓整成自然旋转弧度,[link widoczny dla zalogowanych],以保证血流畅通。(3)对筋膜蒂用受区皮肤包埋缝合困难者.采用表层植皮或者设计为筋膜皮蒂解决蒂部缝合困难的问题。(4)修复小腿近侧t/3处皮缺损,在上胫腓骨间隙形成一遂道.由此穿过岛状皮瓣覆盖胫前侧皮肤.这种修复方法除外形美观外.减少蒂部的张力、扭转,蒂部走行自然.筋膜蒂相对延长4~5cm,[link widoczny dla zalogowanych],使皮j鸯的覆盖转动灵活.移动度大,本组4例全部成活。小腿前侧皮肤映损,合并骨外露感染的治疗有相当难度,采用小腿后侧脖晒浅动脉皮瓣修复比较合理。
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