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背侧腰段硬膜外脂肪（ＰＬＥＦ）常被认为系一单纯的腔隙填充组织。有关背侧硬膜外间隙的解剖及其内容物的研究甚少。有些报告提示背侧腰段硬膜外脂肪垫为—“半液体”状物质。本研究通过解剖形态学及组织学观察腰段硬膜外脂肪的分布及其基本的组织特征，提示这一半液体性质在
Dorsal lumbar epidural fat (PLEF) is often considered a simple lacunar filled tissue. Little is known about the anatomy and contents of the dorsal epidural space. Some reports suggest that the dorsoventral lumbar epidural pad is “semi-liquid”. In this study, the anatomic and histological observation of the distribution of lumbar epidural fat and its basic tissue characteristics, suggesting that this half of the liquid properties in