Zhao Charmain Liling, Teo Suzanne, Lim Lisa, Uppal Sandeep
Department of Otorhinolaryngology, Khoo Teck Puat Hospital, Singapore, Singapore.
Facial Plast Surg. 2020 Oct;36(5):499-504. doi: 10.1055/s-0040-1715615. Epub 2020 Dec 24.
Osteotomies in rhinoplasty are performed to correct deformities in nasal contour. The size of osteotome used is dictated by the thickness of the bony nasal pyramid along the osteotomy route. The aim of this study is to determine whether nasal bony dimensions differ between different ethnic groups in Singapore. Randomly selected patients' computed tomography (CT) scans of the face performed between the years 2010 to 2013 in our institution (Khoo Teck Puat Hospital) were evaluated. The setting was a tertiary government hospital. CT images of 309 patients (233 Chinese [147 males, 86 females], 32 Malays [16 males, 16 females], and 44 Indians [33 males, 11 females]) were evaluated. Anthropomorphic measurements of the nasal bone along the track of the lateral, medial, and intermediate osteotomies, as well as the nasal bone length and pyriform aperture width were measured on the CT images by two independent observers. Statistical analysis was performed using Student's -test and two-way analysis of variance (ANOVA) test. There was no significant difference between the nasal pyramid bone thickness between different ethnicities along the osteotomy tracks ( > 0.05; degrees of freedom [df] = 2). However, there was a significant difference between males and females of the same ethnicity at the low level of the lateral osteotomy ( = 0.003) and the midlevel ( = 0.002) and high-level ( = 0.004) of the intermediate osteotomy. There was a statistically significant difference in nasal pyramid length ( < 0.05, df = 2) and pyriform aperture width ( < 0.05, df = 2) among the races and between the genders ( < 0.05). The mean difference in nasal pyramid length of 2.54 mm and pyriform aperture width of 1.89 mm was particularly significant between the Chinese and the Indians. Gender and ethnic differences in nasal bony dimensions should be considered in surgical planning for rhinoplasty.
鼻整形术中进行截骨术是为了矫正鼻轮廓畸形。所使用的骨凿大小取决于沿截骨路径的鼻骨锥体厚度。本研究的目的是确定新加坡不同种族之间的鼻骨尺寸是否存在差异。对2010年至2013年在我们机构（邱德拔医院）进行的随机选择患者的面部计算机断层扫描（CT）进行评估。研究地点为一家三级政府医院。对309例患者（233例华人[147例男性，86例女性]，32例马来人[16例男性，16例女性]，44例印度人[33例男性，11例女性]）的CT图像进行评估。由两名独立观察者在CT图像上测量沿外侧、内侧和中间截骨路径的鼻骨人体测量数据，以及鼻骨长度和梨状孔宽度。使用学生t检验和双向方差分析（ANOVA）进行统计分析。沿截骨路径不同种族之间的鼻骨锥体厚度无显著差异（P>0.05；自由度[df]=2）。然而，在外侧截骨术的低位（P=0.003）、中间截骨术的中位（P=0.002）和高位（P=0.004），同一种族的男性和女性之间存在显著差异。种族之间以及性别之间的鼻骨锥体长度（P<0.05，df=2）和梨状孔宽度（P<0.05，df=2）存在统计学显著差异（P<0.05）。华人与印度人之间鼻骨锥体长度平均差异2.54mm和梨状孔宽度平均差异1.89mm尤为显著。在鼻整形手术规划中应考虑鼻骨尺寸的性别和种族差异。
