The primary objective of this study was to assess the clinical and radiologic outcomes and introduce the technical notes from 10 patients who underwent interlaminar endoscopic lumbar discectomy (IELD) at L5-S1 using the source images of magnetic resonance (MR) myelograms and performing partial laminectomy. A biportal endoscopic system was used to perform partial laminectomy, followed by fragmentectomy and subtotal discectomy using a uniportal endoscopic system. The source images of MR myelograms were used to identify the anatomical relationship between the herniated disc material, L5 and S1 nerve roots, the thecal sac, and L5 lamina. Preoperative leg and back visual analog scale scores were greatly improved immediately and after 3 months and 6 months postoperatively. Fragmentectomy and subtotal discectomy became easier after performing a partial laminectomy in all IELD cases at L5-S1. The source images of MR myelograms and partial laminectomy is useful for IELD at L5-S1.

Level of Evidence: 

Level IV.

中文翻译：

---

磁共振脊髓造影和部分椎板切除术的源图像在 L5-S1 层间内窥镜腰椎间盘切除术中的有用性：技术说明和初步临床结果

本研究的主要目的是评估临床和放射学结果，并介绍 10 名在 L5-S1 接受层间内窥镜腰椎间盘切除术 (IELD) 的患者的技术说明，这些患者使用磁共振 (MR) 脊髓造影的源图像并进行部分椎板切除术。使用双孔内窥镜系统进行部分椎板切除术，然后使用单孔内窥镜系统进行碎片切除术和椎间盘次全切除术。MR 脊髓造影的源图像用于识别突出的椎间盘物质、L5 和 S1 神经根、鞘囊和 L5 椎板之间的解剖关系。术前腿部和背部视觉模拟量表评分即刻以及术后3个月和6个月后都有很大改善。在 L5-S1 的所有 IELD 病例中进行部分椎板切除术后，片段切除术和次全椎间盘切除术变得更加容易。MR 脊髓造影和部分椎板切除术的源图像对于 L5-S1 的 IELD 很有用。

证据级别： 

四级。