三维激光扫描技术应用于再造耳廓远期变化的研究

摘要

Objective The aim of this study is to compare anthrometric data between the normal auricle and its recon-structed counterpart. Subjects A Total of 56 patients with gradeⅢunilateral microtia who underwent ear reconstruction using soft tissue expander and autogenous rib cartilage framwork was randomly selected. The average age of these patients was 10 years (male=33, female=23). The average follow-up was 15 months. Methods Three dimensional laser scan technology was used to construct digital 3-D models of the reconstructed auricle and its normal counterpart. The height and width of the auri-cle were measured. The SPSS software was used for statistical analysis. Results There was on average a 1.07 ± 0.41 mm in-crease in height and 0.30±0.79 mm increase in width of the reconstructed auricle, compared to the 0.93±0.60 mm increase in height and 0.19±0.56 mm increase in width for the normal counterpart. The height change was statistically significant for both normal and reconstructed auricles, but not the width change. However, the width change of reconstructed auricle in subjects younger than 13 years was 0.51 ± 0.09 mm and statistically significant. The average increase in width of normal auricle was 0.28 ± 0.13 mm and also statistically significant. When comparing measurements of the reconstructed and the normal auricles, no significant difference were observed in the height or width regardless of age. Conclusion Our findings indicate that there is an increase in the height of reconstructed auricles for all age groups. Only in subjects younger than 13 years, the increase in width appears to be of statistical significance. The change of reconstructed auricle appears to be proportional to its normal counterparts.%目的：通过对患者再造耳廓及正常耳廓生长情况的研究，为临床选择适合的手术年龄及合适大小耳廓支架提供科学的理论依据。对象在中国医学科学院整形外科医院2011-8-2013-7入院患者中选取单侧、Ⅲ度小耳畸形患者，应用扩张皮瓣、自体肋软骨法进行耳廓再造，术后时间在1年以上的患者，共56例，男性33例，女性23例，年龄为6岁-30岁，平均10岁，随访时间为12个月-20个月，平均15个月。方法收集患者基本资料，应用三维激光扫描技术对先天性小耳畸形患者的再造耳廓及正常耳廓进行扫描、处理、建立数字化三维耳廓模型，在此基础上进行测量再造耳廓和正常耳廓的长度和宽度，应用SPSS统计软件进行相关数据统计学分析。结果再造耳廓长度平均增长1.07±0.41mm，宽度平均增加0.30±0.79mm；正常耳廓长度平均增长0.93±0.60mm，宽度平均增加0.19±0.56mm。同时统计分析显示双耳长度增长有统计学意义，而宽度增长无统计学意义；而小于13岁组中再造耳廓宽度平均增加0.51±-0.09mm，有统计学意义，正常耳宽度平均增加0.28±-0.13mm，有统计学意义。再造耳廓与正常耳廓长度增长值之间及宽度增长值之间均无统计学差异。结论再造耳廓的长度各年龄阶段均有增长，宽度的增长仅在小于13岁组有统计学意义，而各年龄阶段再造耳廓的变化与正常耳廓的变化是同比例的。