Anatomical Study Of Sacral Hiatus In Dry Isolated Sacra
Author(s): Jadhav Mayuri, Ghorpade Vijay, Nikam Vasudha, Gune Anita, Patil Asha
Background: Caudal epidural block is widely used as diagnostic as well as therapeutic tool in lumbar spinal disorders by orthopedic surgeons. Failure in block in 30-35 % cases is reported to be due to anatomical variations of sacral hiatus and surrounding structures.
Aim: To assess the anatomical variation of sacral hiatus with its other bony landmarks to improve reliability of caudal epidural block.
Material and Methods: 118 dry human sacra of irrespective sex were studied for anatomical variation of sacral hiatus.
Result: In the present study, it was observed that most common shape of sacral hiatus is inverted U –shape followed by inverted V – shape, both composing almost 70 % of the total sacra. Other shapes like irregular, dumbbell and bifid contributing to rest of the 30%. Apex of sacral hiatus was commonly found at the level of fourth sacral vertebra.
Conclusion: Clear understanding of the normal anatomy of sacral hiatus and other structures may be one of the important key factors for successful caudal epidural block