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To perform facial rejuvenation or to treat auricular deformities, the normative data for auricular dimensions is required. The metric standard varies among ethnic groups. Nowadays there is no normative data for Thai people. The aim of this study is to provide anthropometric information about the normal dimensions of the adult population in Thailand. A descriptive study was undertaken in Thai people 18 to 70 years of age. The patients with auricular anomalies (congenital and traumatic), maxillofacial abnormalities and previous auricular surgery were excluded. Six linear dimensions including the length and width of the auricle, lobule and concha and the heights of the auricular protrusion at the superaurale and tragal levels were measured. Auricular, lobular and conchal indices were calculated. The inclination of the auricle relative to its vertical axis was measured. The results from 200 Thai people (80 men 120 women) showed the mean values (±S.D.) of the dimensions of the external ear. For the right ear, the length and width of the auricle were 64.6±4.8 and 33±3.6 mm respectively. The lobular length and width were 19.1±3.4 and 19.6±3.1 mm. The conchal length and width were 27±3.4 and 18.1±3.4 mm. The protrusion at the superaurale was 16.5±3.5 mm. The protrusion at the tragal level was 20.8±3.7 mm. The inclination angle was 19.4±6.7 degrees. For the left ear, the length and width of the auricle were 65.2±5 and 33.5±6.1 mm respectively. The lobular length and width were 19.2±.9 and 19.8±3 mm. The conchal length and width were 27.2±3.6 and 18.2±3.2 mm. The protrusion at the superaurale was 17±3.5 mm. The protrusion at the tragal level was 20.6±3.6 mm. The inclination angle was 20.1±6.8 egrees.
This study provides anthropometric information of the external ear in Thai population.
บทความที่ลงพิมพ์ในวารสารเวชศาสตร์ป้องกันแห่งประเทศไทย ถือเป็นผลงานวิชาการ งานวิจัย วิเคราะห์ วิจารณ์ ตลอดจนเป็นความเห็นส่วนตัวของผู้นิพนธ์ กองบรรณาธิการไม่จำเป็นต้องเห็นด้วยเสมอไป และผู้นิพนธ์จะต้องรับผิดชอบต่อบทความของตนเอง
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