不同哺乳动物上斜肌周围结缔组织结构与功能的研究

Study on the structure and function of superior oblique connective tissue in different mammals

目的研究哺乳类上斜肌周围结缔组织形态特点，分析探讨上斜肌周围结缔组织对眼球运动的作用。方法实验研究。盐酸氯胺酮深度麻醉成年猕猴2只，成年兔5只，将所有眼眶分离，整体固定，每一动物任选一眼眶行大体解剖，组织学染色眶进行全眶石蜡包埋，冠状位连续切片，相邻切片以Masson三色染色、Weigert染色法分别进行胶原纤维和弹性纤维染色。详细观察上斜肌周围结缔组织的形态、结构及其与眼外肌的组织关系。结果猕猴、兔上斜肌眶层纤维随着球层纤维向前行走，其周围结缔组织逐渐增厚直至滑车处。此后，上斜肌眶层肌纤维终止于周围结缔组织，并与上直肌胶原纤维环相延续。结论上斜肌收缩可引起上直肌向鼻侧移动，部分解释了前庭眼反射的运动机制。

Objective The purpose of this research lied in studying the structure and function of connective tissue of superior oblique （SO） in rhesus and rabbit. Methods It was an experimental study. Two adult monkeys（rhesus） and five adult rabbits were involved in this study. The gross anatomy of an orbit in each animal was observed. Meanwhile, the fellow orbit was processed with paraffin imbedding and coronal serial section. Masson triehrome stain was used to distinguish muscle and collagen, and Weigert stain was performed for identification of elastin. Results Connective tissue around SO in both mammals thickened anteriorly, reflected in the troehlea along with the SO tendon, and became contiguous with the nasal aspect of the SR connective tissue ring, while the tendon passed inferior to the SR pulley to insert on the sclera. Conclusion The contraction of SO OL can cause SR shift nasally. This may explain the mechanism of vestibulo-oeular reflex（VOR） partly.