Applied anatomy of intrusive operations of sacral cyst

doi:10.3969/j.issn.0529-1356.2014.06.014

Abstract

Abstract:

Objective To identify sacral hiatus through the sacral bony landmarks, and to clarify its positional relationship with the sacral ganglion, and to provide anatomical guidance of the angle and depth of the needle for interventional operation through sacral hiatus. Methods Fifteen adult cadavers were included in this study. The distance and angle between the sacral hiatus and the sacral ganglion and the triangle which was formed by left and right posterior superior iliac spine and the midpoint of the sacral cornu were measured. Various anatomical measurements on the sagittal section were conducted. The angle and depth of the inserted puncture needle were recorded. Results Average distance from the midpoint of the sacral cornu to the end of the coccyx was (5.73 ± 0.81) cm. Both sides of the posterior superior iliac spine and the midpoint of sacral cornu constituted an isosceles triangle. The average depression angle of needle from the sacral hiatus was 60.4 degrees. Distance from the midpoint of both sides of the sacral hiatus to lower bound of the dural was greater than to the third sacral ganglion, and shorter than to the first and second midpoint of sacral ganglia. Conclusion This study summed up surface location of the sacral hiatus, clarified its body surface, depth, positional relationship with the sacral ganglion and the best angle for needle piercing. These findings can help clinicians perform safer diagnosis and treatment on the of the sides sacral cyst, and also provide a useful reference for caudal anesthesia, RF rhizotomy, and ultrasound examination.

Key words: Sacral hiatus, Sacral cyst, Puncture, Applied anatomy, Adult

YAN Jia FAN Yan LIU Cheng-xing BAI Yong ZHANG Xiang LIU Zong-liang BA Ying-chun*. Applied anatomy of intrusive operations of sacral cyst[J]. AAS, 2014, 45(6): 814-818.

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