Department of Otolaryngology - Head and Neck Surgery, College of Medicine, King Saud University, Riyadh, Kingdom of Saudi Arabia.
Department of Otolaryngology - Head and Neck Surgery, King Abdulaziz University Hospital, P.O. Box 245, Riyadh, 11411, Kingdom of Saudi Arabia.
Aesthetic Plast Surg. 2018 Aug;42(4):1085-1089. doi: 10.1007/s00266-018-1127-9. Epub 2018 Apr 11.
The aim of this study was to derive the normal values for bone and soft tissue nasal angles as well as the overlying skin thickness and to attempt to determine the correlation between differences in bone and soft tissue angles and overlying skin thickness in Middle Eastern patients.
Three-dimensional cephalometric analysis was performed for 100 patients who underwent computed tomography of the paranasal sinuses. The nasofrontal angle, pyramidal angle-nasal root, pyramidal angle-tip of the nasal bone, and overlying skin thickness were measured, and the results were analyzed according to sex, age, and body mass index (BMI).
All soft tissue angles were significantly larger than the bone angles, with the mean difference being 11.62°, 30.80°, and 27.05° for the nasofrontal angle (P = 0.000), pyramidal angle-nasal root (P = 0.000), and pyramidal angle-tip of the nasal bone (P = 0.000), respectively. The mean overlying skin thickness was 3.89 ± 1.48 mm at the nasion, 1.16 ± 0.6 mm at the rhinion, and 2.93 ± .97 mm at the nasal tip. Differences in the nasofrontal angle were strongly correlated with the skin thickness at the nasion (P = 0.001).
A simple clinical exam of the soft tissue nasal angles does not reflect the underlying bone angles that will be encountered during rhinoplasty. BMI does not influence nasal shape, and rhinoplasty surgery should take into account the ethnic group, age, and sex of the patient. Surgeons should leave a minor skeletal hump at the end of the nasal bone for Middle Eastern patients.
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本研究旨在得出鼻骨和软组织鼻角的正常值，并尝试确定中东患者骨组织和软组织角度以及覆盖皮肤厚度之间的差异是否存在相关性。
对 100 例行鼻窦计算机断层扫描的患者进行三维头影测量分析。测量鼻额角、鼻根-鼻锥角、鼻骨锥尖-鼻骨角和覆盖皮肤厚度，并根据性别、年龄和体重指数（BMI）进行分析。
所有软组织角度均显著大于骨组织角度，鼻额角、鼻根-鼻锥角和鼻骨锥尖-鼻骨角的平均差值分别为 11.62°、30.80°和 27.05°（P = 0.000）。鼻顶点覆盖皮肤厚度的平均值分别为鼻根 3.89 ± 1.48 mm、鼻小柱 1.16 ± 0.6 mm 和鼻尖 2.93 ± 0.97 mm。鼻额角的差异与鼻根处的皮肤厚度有很强的相关性（P = 0.001）。
对软组织鼻角的简单临床检查并不能反映鼻整形术中遇到的潜在骨角。BMI 不会影响鼻型，鼻整形手术应考虑患者的种族、年龄和性别。对于中东患者，外科医生应在鼻骨末端留下一个小的骨性驼峰。
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