Chiari malformation type I is a developmental abnormality with an array of surgical techniques introduced for the management of it. The most common technique is foramen magnum decompression with duraplasty. Dura-splitting technique as one of the non-dura-opening techniques is a less known procedure that spares the internal layer of the dura and can theoretically result in fewer complications compared to duraplasty. So, we performed a review of literature and meta-analysis on different clinical and radiological aspects of this technique and compared its outcomes to duraplasty. MOOSE guidelines were followed. A systematic search of three databases based on predefined search strategy and inclusion/exclusion criteria was performed. After quality assessment and data extraction by two authors, summarized data were presented in form of tables, and meta-analysis results were illustrated in forest plots. A review of 10 included studies consisting of 370 patients revealed significantly shorter operation duration and less intraoperative blood loss in the dura-splitting technique compared to duraplasty. Interestingly, there was no significant difference between these two techniques in terms of clinical and radiological outcomes. Overall complication rate and incidence of CSF-related complications or infections were significantly in favor of the dura-splitting technique. Dura-splitting technique can be considered as a safe and effective surgical procedure for Chiari I malformation with comparable outcomes and fewer complications compared to duraplasty, although this interpretation is derived from retrospective observational studies and lack of a prospective clinical trial is evident.

I型Chiari畸形是一种发育异常，引入了一系列外科技术来对其进行管理。最常见的技术是通过硬膜成形术进行大孔减压。作为非硬脑膜张开技术之一，硬脑膜劈开术是一种鲜为人知的手术，它可以保留硬脑膜的内层，并且与硬脑膜成形术相比，理论上可以减少并发症。因此，我们对该技术的不同临床和放射学方面进行了文献综述和荟萃分析，并将其结果与硬膜成形术进行了比较。遵循MOOSE准则。基于预定义的搜索策略和包含/排除标准对三个数据库进行了系统搜索。经过两位作者的质量评估和数据提取后，汇总数据以表格形式呈现，和荟萃分析结果在森林地块中进行了说明。一项包含370名患者的10项研究的回顾显示，与硬膜成形术相比，硬膜分割技术的手术时间明显缩短，术中失血更少。有趣的是，就临床和放射学结果而言，这两种技术之间没有显着差异。总体并发症发生率和脑脊液相关并发症或感染的发生率明显有利于硬脑膜分割技术。与硬膜成形术相比，硬脑膜分割技术可被认为是一种安全有效的Chiari I畸形手术方法，与硬膜外成形术相比具有可比的结果并且并发症更少，尽管这种解释来自回顾性观察研究，而且尚缺乏前瞻性临床试验。