Surgically Relevant Morphological Parameters of the L5–S1 Interlaminar Window: A Statistical Analysis Based on 3D Reconstruction of CT Data

窗口(计算) 核医学 医学 腰骶关节 计算机断层摄影术 腰椎 腋窝 解剖 放射科 计算机科学 乳腺癌 操作系统 癌症 内科学
作者
Dongdong Wang,Guoxin Fan,Bangde Yin,Zhaowei Zhou,Minfei Qiang,Jin Wang,Yanxi Chen,Hailong Zhang
出处
期刊:Journal of neurological surgery [Georg Thieme Verlag KG]
卷期号:84 (05): 419-427 被引量:1
标识
DOI:10.1055/a-1698-6384
摘要

Abstract Background The interlaminar window is the most important anatomical corridor during the posterior approach for lumbar and lumbosacral pathologies. Three-dimensional (3D) reconstruction of the L5–S1 interlaminar window including accurate measurements may be beneficial for the surgeon. The aim of this study was to measure relevant surgical parameters of the L5–S1 interlaminar window based on 3D reconstruction of lumbar computed tomography (CT). Methods Fifty thin-layer CT data were retrospectively collected, segmented, and reconstructed. Relevant surgical parameters included the width, left height, right height, interpedicular distance (IPD), area, and suitable approach area of the L5–S1 interlaminar window. Morphological measurements were performed independently by two experienced experts. Patients with disk herniation at L5–S1 were regarded as group A (n = 28) and those without L5–S1 disk herniation were regarded as group B (n = 22). Results The average left height, right height, width, and area of the L5–S1 interlaminar window were 9.14 ± 2.45 mm, 9.55 ± 2.46 mm, 23.55 ± 4.91 mm, and 144.57 ± 57.05 mm2, respectively. The average IPD at the superior, middle, and inferior pedicle levels was 29.29 ± 3.39, 27.96 ± 3.38, and 37.46 ± 4.23 mm, respectively, with significant differences among these three parameters (p < 0.05). The average suitable approach areas of the L5–S1 interlaminar window were the following: left axilla—24.52 ± 15.91 mm2; left shoulder—27.14 ± 15.48 mm2; right axilla—29.95 ± 17.17 mm2; and right shoulder—31.12 ± 16.40 mm2 (p > 0.05). There were no significant differences between groups A and B in these parameters (p > 0.05), except the inferior IPD (36.69 ± 3.73 vs. 39.23 ± 3.01 mm, p = 0.017 < 0.05). Conclusion The morphological measurement of the L5–S1 interlaminar window based on 3D reconstruction provided accurate and reliable reference data for posterior microsurgical and endoscopic approaches as well as percutaneous infiltrations.
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