Objectives: The objective of this study is to evaluate donor-site morbidity after costal cartilage harvest for microtia reconstruction. Methods: A total of 70 patients who underwent autologous costal cartilage harvest for microtia reconstruction from March 2008-March 2009 were included. Anterior chest wall deformity was evaluated with chest topography, and scar quality at baseline and at 6-months follow-up, and final outcomes analyzed with SPSS. Results: In 70 patients, 52 (74%) were male, 18 (26%) were female, and altogether 40 (57%) patients developed deformity. At 6-month follow-up, the incidence of anterior chest wall deformity was highest at 80% in Block-III, and least at 0% in Block-I. The 6 - 10 years age group was the largest group at 84% (21), and also with highest incidence of deformity in association to Block-IV harvest at 83%. The incidence of donor-site deformity was higher in female gender at 66%, and 54% in males. But in the sub-group, male had higher incidence of deformity at 75% in both Block-III, and Block-IV when compared to the respective females. The 120 - 135 cm height group had the highest deformity at 67% with Block-IV costal cartilages harvested. At the three measurement points: 1) xiphisternum, 2) intersecting points between PSL and LCM, and 3) intersecting points between MCL and LCM, significant differences (mean) were observed in chest circumference from baseline to 6-month follow-up, and between the left and right chest hemi-circumference (postoperatively). Acceptable donor-site scar was observed in all but 3% (2) developed hypertrophic scar. Conclusion: The development of chest wall deformity was observed when more than one costal cartilage was harvested, particularly the 6th (complete), 7th, 8th block. Therefore, to minimize the deformity, we recommend harvesting only the necessary amount of cartilage, and at the lowest level possible to avoid injury of costochondral junction. Additionally, age, height, gender and chest development are equally important factors which influence donor
目的探讨先天性小耳畸形发病的危险因素以及临床听力学特征。方法对2018~2024年我院儿童听力保健门诊就诊的50例先天性小耳畸形患儿及同期来院就诊的90例健听儿童的临床资料进行回顾性分析。结果50例小耳畸形患儿中,54%为男性,60.9%的单侧畸形为右侧受累,70.4%小耳畸形伴外耳道狭窄或闭锁,82%为单发小耳畸形。50例小耳畸形患儿按照Marx分级:Ⅰ级7例,Ⅱ级15例,Ⅲ级28例;平均ABR气导阈值分别为Ⅰ级60.71±7.51 dB nHL、Ⅱ级75.33±2.56 dB nHL、Ⅲ级83.74±2.22 dB nHL,不同分级听力阈值存在显著差异。生活在矿区、孕期前3个月服用上感药物、孕期用药史、出生时低体重等发生小耳畸形的可能性更高。结论生活在矿区、孕期患病、孕期前3个月服用上感药物、孕期用药史、低体重儿等是小耳畸形的高风险因素;小耳畸形程度越重,听力损失越重。