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目的 :为探讨腰神经后内侧支在乳突副突间沟骨纤维管 (简称骨纤维管 )处受压的有关解剖因素。方法 :在 2 0具成人尸体标本上 ,观察腰神经后内侧支及与其有关的解剖结构 ;分别测量骨纤维管的大小、乳突副突间韧带的厚度以及体表定位。结果 :腰神经后内侧支的直径 L1～ 4均数为0 .79m m,L5 为 0 .6 5 m m ;骨纤维管的纵、横径均数 L1～ 4基本相近 ,分别为 2 .2 0 mm ,1.71mm左右 ,而 L5 分别为 1.12 mm、1.30 mm ;乳突副突间韧带的厚度 ,L3～ 5 分别为 2 .0 7mm、2 .0 3mm、1.91mm ;体表定位在相对应的各腰椎平面距后正中线外侧约 2 0～ 2 5 mm处。结论 :在腰神经后内侧支的行程中存在多处受压的解剖因素 ,其中以骨纤维管内的一段更为明显 ,这为临床治疗腰腿痛提供了解剖学基础。
Objective: To investigate the anatomical factors of compression of the medial branch of the lumbar nerve in the mastoid process of the intercondylar glenoid fibers (referred to as the fibrous tracts). Methods: Twenty cases of adult cadaver specimens were observed the posterior medial branch of the lumbar nerve and their anatomical structures. The size of the fibrous trachea, the thickness of the mastoid process and the surface of the papilla were measured. Results: The average diameter of the medial branch of the lumbar nerve L1 ~ 4 was 0.79m m, L5 was 0.65mm; longitudinal and transverse diameter of the fiber bundle L1 ~ 4 are basically similar, respectively, 2.20 mm and 1.71 mm, respectively, while L5 was 1.12 mm and 1.30 mm respectively. The thickness of the mastoid collateral ligament, L3 ~ 5 were 2.07mm, 2.03mm and 1.91mm respectively. The lumbar plane from the posterior midline lateral about 20 ~ 25 mm Department. Conclusion: There are many anatomical factors in the medial branch of the lumbar nerves. One of the anatomical factors is more obvious, which provides an anatomical basis for clinical treatment of low back pain.