猪背部乒乓球拍样任意型皮瓣成活的动物实验研究

目的 探讨乒乓球拍样任意型皮瓣成活面积与窄蒂长宽比例关系.方法 25只猪随机分成5组,在5组猪的背部分别形成不同长宽比例的狭长窄蒂和5个不同面积的任意型皮瓣.对每组皮瓣进行大体观察、荧光色素钠染色、单光子发射计算机断层仪（ECT）血流量测定、成活面积分析等.结果 当狭长窄蒂的长宽比例不变时,随着皮瓣面积的增加,皮瓣成活面积也随之增大,但达一定限度时皮瓣远端即发生坏死,而成活面积并未缩小;当皮瓣面积不变,随着狭长窄蒂的长宽比例增加,皮瓣成活面积不受影响,但达一定限度时皮瓣远端即发生坏死,皮瓣成活面积缩小.结论 狭长窄蒂任意型皮瓣是一种简便实用的任意型皮瓣,蒂部可以设计成狭长状,蒂瓣的长宽比远小于传统的比例,在一定范围内增大皮瓣面积或蒂部的长宽比例不会导致皮瓣坏死.

Survival of slender narrow pedicle random flap: an experimental study

Objective To reveal the relationship between a certain ratio of the length to width of a slender narrow pedicle and random flap in survival area with an experimental study. Methods 25 pigs were randomly divided into 5 groups. The ratio of length to width of slender narrow pedicle in 5 groups was different and every ratio's slender narrow pedicle was carrying 5 different sizes of random flaps. In each group, these 5 flaps were created randomly in each pigs' bilateral back. The flaps were evaluated with the general observation, fluorescence examination, blood flow ECT test, and computerized analysis of survival area. Results When the ratio of the length to width of the slender narrow pedicle was constant, along with the flap area increased, the flap survival area also increased, but when the flap reached a certain area, the distal flap would develop necrosis, the flap survival area would not reduce; when the flap size remained unchanged, along with the ratio of the length to width of the slender narrow pedicle increased, the flap survival area was not affected, but, when the ratio of the length to width of the slender narrow pedicle increased to a certain limit, distal flap would lead to necrosis, and the flap survival area would reduce. Conclusion The slender narrow pedicle flap is a new and practical random flap. The pedicle of random flap can be designed as slender shape, and the ratio of pedicle width to flap length is far less than traditional ratio. Increasing the flap size or ratio of the length to width of a slender narrow pedicle in a certain extent will not lead to flap necrosis.