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[Applied anatomic study on intraorbital and intraethmoidal parts of ethmoidal artery]
Objective:
In order to provide anatomic data for operation of ethmoidal sinus and optic canal decompression.
Method:
Using microanatomic method, the intraorbital and intraethmoidal parts of ethmoidal arteries were observed and measured.
Result:
The length of intraorbital segment of anterior ethmoidal artery was 5.16 +/- 1.24 mm, and its diameter was 0.56 +/- 0.17 mm; the length of intraorbital segment of posterior ethmoidal artery was 9.08 +/- 2.29 mm, with diameter 0.37 +/- 0.14 mm. The ethmoidal artery, nerve and vein were surrounded by fascial sheath which could extend to ethmoidal sinus. Three variants of ethmoidal arteries could be found: It passed through bony canal; It went between the superior wall of ethmoidal cell and ethmoidal mucosa; One part went through bony canal, but the other did not.
Conclusion:
It was important to find ethmoidal artery in operation of ethmoidal sinus and optic canal decompression.