A SURGICAL ANATOMY OF THE CARTILAGINOUS EXTERNAL NOSE IN THE CHINESE / 解剖学报

ABSTRACT

The cartilaginous external nose was observed and measured in a total of 66 adult Chinese cadavers (male 86 sides, female 45 sides). In 57 cases (114 sides) the anatomical method was used and in the remaining 9cases (17 sides), the cartilaginous external nose was removed from the cadaver, embedded in celloidin, and cut into serial coronary sections. Each section was 50～80 ?m in thickness, stained with hematoxylin-eosin and examined microscopically. The following observations were made.1. The morphology and interdigitatum of the nasal cartilage were observed.2. The size of the lateral crus of the cartilago alaris major The average cephalocaudal length is 9.72?0.11 mm; the average medio-lateral length is 13.51?0.10mm; the average length of the inferior border is 9.36?0.13 mm. 3. The average distance from the middle line to the contact point of the cartilago nasi lateralis and the cartilago alaris major is 3.0?0.11 mm.4. The average distance from the inferior border of the cartilago alaris major to the edge of the alae nasi is 5.01?0.07mm.5. The average angle of rise of cartilago alaris major from cartilago nasi lateralis (cephalocaudad) is 23.06?.6. The interdigitation between cartilago nasi lateralis and eartilago alaris major were classified into the following three types a) interlocked scroll(82 sides, 62.6％?4.23), b) overlap only (24 sides, 18.32％?3.38) and end-to-end (25 sides, 19.55％?3.34).7. According to applied surgical anatomy, the wall of the cartilaginous external nose can be divided into 4 layers a) the mucoperichondrium, b) the cartilage, c) the subcutaneous muscular layer and d) the skin.8. Age changes in the configuration of the cartilaginous external nose and the cartilaginous support of the nasal tip were observed and discussed.