眼动脉显微外科解剖学观察

目的 :为视神经减压术提供眼动脉颅内段和眶内段的解剖学资料。方法 :利用显微解剖学技术及组织切片方法对 70个经甲醛固定的头颅标本眼动脉颅内段和视神经管内段的行程、毗邻、分支及眼动脉起始等进行了观察。结果 :眼动脉颅内段和视神经管内段可分为短脚、长脚和远侧部三段。有 5 5 .97%的眼动脉在视神经的腹侧形成压迹。眼动脉在视神经管内穿行于视神经的硬膜鞘壁内 ,其分支多行于视神经的腹侧。结论 :视神经管下壁切除时应注意保护眼动脉。视神经减压术管内鞘切开部位宜选择在鞘的外、上壁交界外。

Microsurgical anatomy of ophthalmic artery

Objective:To provide anatomic data of ophthalmic artery for the decompression of optic nerve. Methods: The courses,adjacent structures and branches of the intracranial and intracanal segments of ophthalmic artery were observed on 70 adult cadaveric head specimens by microanatomic and histological methods.Results: The intracranial and intracanal segments of ophthalmic artery were divided into three segments:long leg,short leg and distal part.The ophthalmic arterial impressions were found on ventral of the optic nerves(55.97%).In optic canal,ophthalmic artery went into optic nerve sheath,its branches passed through inferior part of optic nerve. Conclusions: During the inferior wall of optic canal was incised,the ophthalmic artery should be protected.It would be safe to incise the superior lateral wall of intra canal optic sheath in the decompression of optic nerve.