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目的：研究人出生后前庭小管的发育，并探讨其临床意义。方法：对足月胎儿和正常成人前庭小管（各６块颞骨）行连续切片并进行计算机辅助的三维结构重建。结果：足月胎儿和正常成人前庭小管有明显的解剖差异。足月胎儿呈一近似直管形，成人呈倒“Ｊ”形。足月胎儿前庭小管外口径、内表面积、长度、容积明显较成人小，而二者的内口径相差不显著。足月胎儿前庭小管明显较成人小。前庭小管外口径可充分反映前庭小管的发育程度。结论：胎儿在出生后其前庭小管要经过充分发育方可达到正常成人的形状。如果前庭小管发育障碍则引起狭窄或阻塞。
Objective: To study the development of vestibular tubule after birth and to explore its clinical significance. Methods: The full-term fetus and normal adult vestibular tubules (each 6 temporal bone) were serially sectioned and computer-aided 3D reconstruction was performed. Results: Full-term fetus and normal adult vestibular tubules have significant anatomical differences. Full-term fetus was a straight tube-shaped, adult was inverted “J” shape. Full-term fetal vestibular canal diameter, internal surface area, length, volume was significantly smaller than adults, while the difference between the two internal diameter was not significant. Full-term fetal vestibular tubules were significantly smaller than adults. Vestibular small diameter tube can fully reflect the development of vestibular tubules. CONCLUSION: The fetus is well-developed to reach the shape of a normal adult after its birth. If the vestibular tubule dysplasia is caused by stenosis or obstruction.