Larrabee W F, Sutton D
Laryngoscope. 1981 May;91(5):726-34. doi: 10.1288/00005537-198105000-00005.
An animal model (using piglets) has been developed to study the mechanical properties of simple advancement and rotation flaps. The effects of different length-width ratios and defect sizes on the tension required to close a rectangular advancement flap are described. Characteristic curves of force vs. advancement distance are presented and mechanisms discussed. The flaps should have a length-width ratio of a least 1:1; the mechanical advantage of lengthening the flap further is directly related to the measured closing tension. The distribution of tension in a standard 180 degrees rotation flap is analyzed. Maximum tension is found between 90 degrees and 135 degrees (opposite the site of defect closure); this is at variance with the vector commonly pictured. The force required to close a defect with rotation flaps of varying length (45 degree to 180 degrees) is measured. There is little mechanical benefit in extending the flap past 90 degrees.
已建立一种动物模型（使用仔猪）来研究单纯推进皮瓣和旋转皮瓣的力学特性。描述了不同长宽比和缺损大小对闭合矩形推进皮瓣所需张力的影响。给出了力与推进距离的特征曲线并讨论了相关机制。皮瓣的长宽比应至少为1:1；进一步延长皮瓣的机械优势与测得的闭合张力直接相关。分析了标准180度旋转皮瓣中的张力分布。发现最大张力出现在90度至135度之间（与缺损闭合部位相对）；这与通常描绘的向量不同。测量了用不同长度（45度至180度）的旋转皮瓣闭合缺损所需的力。将皮瓣延长超过90度几乎没有机械益处。
