Dean P W, Nelson J K, Schumacher J
Department of Large Animal Medicine and Surgery, Texas A&M University, College Station 77843.
Am J Vet Res. 1990 Jan;51(1):114-7.
Cartilage retention strengths of laryngoplasty prostheses were compared in larynges of 2-, 3-, and 4-year-old horses, using doubled polyester and expanded polytetrafluoroethylene prostheses. Bilateral laryngoplasties were performed on each of 15 (seven 2-year-old, two 3-year-old, and six 4-year-old) larynges, which were collected at an abbatoir. Prostheses were secured to a mechanical testing machine, and tension causing arytenoid cartilage abduction was applied, until total failure of the cartilage or prosthesis resulted. Tension caused cricoid cartilage failure in 1 specimen, and muscular process cartilage failure in the remainder. There was no significant effect of age, prosthetic material, or side of prosthesis placement on cartilage retention of the prostheses. Additionally, frequency of multiple load-displacement peaks, indicating partial muscular process failure, was not affected by age or prosthetic material variables.
使用双层聚酯和膨体聚四氟乙烯假体，在2岁、3岁和4岁马的喉部比较喉成形术假体的软骨保留强度。对15个喉部（7个2岁、2个3岁和6个4岁）中的每一个进行双侧喉成形术，这些喉部是在屠宰场收集的。将假体固定在机械试验机上，并施加导致杓状软骨外展的张力，直到软骨或假体完全失效。在1个标本中张力导致环状软骨失效，其余标本中导致肌突软骨失效。年龄、假体材料或假体放置侧对假体的软骨保留没有显著影响。此外，表明部分肌突失效的多个载荷-位移峰值的频率不受年龄或假体材料变量的影响。
