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标题：THE STUDY OF SACRAL HIATUS IN TAMILNADU AND ITS CLINICAL IMPORTANCE IN CAUDAL EDIPDURAL ANAESTHESIA
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作者：Senthamizhselvi R ; Latha M ; Sivaranjani K 等
期刊名称：International Journal of Anatomy and Research
印刷版ISSN：2321-4287
出版年度：2017
卷号：5
期号：4
页码：4553-4557
DOI：10.16965/ijar.2017.394
出版社：International Journals of Medical and Health Research
摘要：Background and Aims: The sacral hiatus is formed by the failure of lamina of the fifth sacral vertebra to meet inthe median plane. The aim is to study the sacral hiatus, as the effectiveness of caudal epidural anaesthesiadepends on the knowledge in anatomy of sacral hiatus and its variations.Materials and Methods: In this study 107 sacral bones of unknown sex are obtained from Chengalpattu medicalcollege in Tamilnadu and studied under various parameters like shape, apex, base, length, width andanteroposterior diameter of the sacral hiatus using vernier caliper of accuracy 0.1mm.Results: The maximum number of sacra exhibits Inverted ‘U’ shaped sacral hiatus, with apex at S4 and base at S5.The average length, width and anteroposterior diameter are between 11-20mm, 11-15mm and 5-6mm respectively.Two sacra had absent sacral hiatus and 5 sacra had completely unfused lamina.Conclusion: Caudal epidural anaesthesia is impossible in persons with absent sacral hiatus. Completely unfusedsacrum and abnormally elongated sacral hiatus can result in accidental subdural injection and subarachanoidinjection. The size and shape of sacral hiatus varies considerably. The awareness of such variations is essentialfor the clinicians during caudal epidural approaches.
关键词：Sacra; Sacral hiatus; Caudal epidural anaesthesia.