Downloads: 0
Research Paper | Radiology and Medical Imaging Sciences | Volume 15 Issue 6, June 2026 | Pages: 1138 - 1140 | India
Radiological Evaluation of Sacral Hiatus and its Clinical Significance
Abstract: This retrospective observational study evaluated the anatomical features and radiological variations of the sacral hiatus using computed tomography in 100 patients who underwent CT abdomen and pelvis examinations between January and August 2025. The sacral hiatus serves as an important access point for caudal epidural anaesthesia, and its anatomical diversity can influence the safety and success of various clinical procedures. Sagittal and reconstructed images obtained from a 16-slice CT scanner were analysed to assess the shape, level of apex and base, length, transverse width, and anteroposterior diameter of the hiatus. The inverted U shape was the most common morphology, followed by inverted V, dumbbell, irregular, and absent hiatus. The apex was most frequently located at the S4 vertebral level, while the base was commonly found at S5. Most cases showed a hiatus length of 10 to 30 mm, a transverse width of 7 to 20 mm, and an anteroposterior diameter of 3 to 6 mm. The findings highlight considerable anatomical variability of the sacral hiatus and underline the value of pre-procedural imaging in improving the accuracy and safety of caudal epidural blocks and other interventions involving the sacral region.
Keywords: Sacral hiatus, Computed tomography, Caudal epidural anaesthesia, Anatomical variation, Sacrum
How to Cite?: Dr. Kunapareddy Hemalatha, "Radiological Evaluation of Sacral Hiatus and its Clinical Significance", Volume 15 Issue 6, June 2026, International Journal of Science and Research (IJSR), Pages: 1138-1140, https://www.ijsr.net/getabstract.php?paperid=MR26622110203, DOI: https://dx.doi.org/10.21275/MR26622110203