Silver F M, Myer C M, Cotton R T
Department of Otolaryngology, Children's Hospital Medical Center, Mobile, AL.
Otolaryngol Head Neck Surg. 1993 Jan;108(1):63-9. doi: 10.1177/019459989310800108.
Laryngotracheoplasty often includes bilateral lateral division of the cricoid cartilage, despite the theoretical risk that cartilage growth centers might be located in the lateral cricoid. To investigate the effect of lateral cricoid cartilage division on subsequent cartilage growth, 60 five-week-old New Zealand white rabbits were divided into four groups of 15 animals each. Group I was comprised of unoperated controls. The remaining animals underwent anterior (group II), anterior and posterior (group III), and anterior, posterior, and bilateral lateral (group IV) division of the cricoid cartilage. Animals were killed 20 weeks after surgery, and the cross-sectional area of each animal's cricoid cartilage and of each animal's airway was determined. There was no statistically significant difference in mean cartilage cross-sectional area between any of the four groups; the group IV mean was larger than that of any other group, though the difference was not significant. There was no significant difference in airway cross-sectional area between any of the groups operated on. From these results, lateral cricoid division in the growing animal does not appear to interfere with subsequent normal growth of the larynx.
喉气管成形术通常包括环状软骨的双侧外侧切开，尽管理论上存在软骨生长中心可能位于环状软骨外侧的风险。为了研究环状软骨外侧切开对后续软骨生长的影响，将60只5周龄的新西兰白兔分为四组，每组15只。第一组为未手术的对照组。其余动物分别接受环状软骨的前部切开（第二组）、前部和后部切开（第三组）以及前部、后部和双侧外侧切开（第四组）。术后20周处死动物，测定每只动物环状软骨的横截面积和气道横截面积。四组之间的平均软骨横截面积没有统计学上的显著差异；第四组的平均值大于其他任何一组，尽管差异不显著。接受手术的各组之间气道横截面积没有显著差异。从这些结果来看，在生长中的动物中进行环状软骨外侧切开似乎不会干扰随后喉部的正常生长。
