The myodural bridge complex defined as a new functional structure
The myodural bridge complex defined as a new functional structure
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肌硬膜桥复合体被定义为一种新的功能结构
DOI：
10.1007/s00276-019-02340-6
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发表时间：
2020-02-01
影响因子：
1.4
通讯作者：
Sui, Hong-Jin
中科院分区：
文献类型：
--
作者：
Zheng, Nan;Chung, Beom Sun;Sui, Hong-Jin
目的 枕下肌与颈脊髓硬膜（SDM）之间的结缔组织被称为肌硬膜桥（MDB）。然而，构成MDB的不同结缔组织纤维的毗邻关系仍不清楚。这一信息对于探索MDB的功能将非常有用。
方法 通过人体MDB的三维可视化模型、P45塑化切片和组织学切片来展示MDB不同结缔组织纤维的毗邻关系。
结果 我们发现源自枕下区的头后小直肌（RCPmi）、头后大直肌（RCPma）和头下斜肌（OCI）的MDB是共存的。部分MDB纤维源自RCPmi的腹侧，与来自RCPma颅段的纤维一起，穿过寰枕后间隙（PAOiS）并进入上颈段SDM的后侧。此外，部分MDB纤维源自RCPmi的背侧、RCPma尾段的腹侧以及OCI内侧段的腹侧，进入寰枢后间隙（PAAiS）的中部并与椎硬膜韧带（VDL）融合，后者与颈段SDM相连。
结论 我们的研究结果证明MDB是一种复杂的结构，我们将其称为“肌硬膜桥复合体”（MDBC）。在头部运动过程中，拉力可能通过MDBC有效地传递。MDBC的概念将有助于全面探索MDB的功能。
PurposeThe connective tissue between suboccipital muscles and the cervical spinal dura mater (SDM) is known as the myodural bridge (MDB). However, the adjacent relationship of the different connective tissue fibers that form the MDB remains unclear. This information will be highly useful in exploring the function of the MDB.MethodsThe adjacent relationship of different connective tissue fibers of MDB was demonstrated based upon three-dimensional visualization model, P45 plastinated slices and histological sections of human MDB.ResultsWe found that the MDB originating from the rectus capitis posterior minor muscle (RCPmi), rectus capitis posterior major muscle (RCPma) and obliquus capitis inferior muscle (OCI) in the suboccipital region coexists. Part of the MDB fibers originate from the ventral aspect of the RCPmi and, together with that from the cranial segment of the RCPma, pass through the posterior atlanto-occipital interspace (PAOiS) and enter into the posterior aspect of the upper cervical SDM. Also, part of the MDB fibers originate from the dorsal aspect of the RCPmi, the ventral aspect of the caudal segment of the RCPma, and the ventral aspect of the medial segment of the OCI, enter the central part of the posterior atlanto-axial interspace (PAAiS) and fuse with the vertebral dura ligament (VDL), which connects with the cervical SDM.ConclusionsOur findings prove that the MDB exists as a complex structure which we termed the ‘myodural bridge complex’ (MDBC). In the process of head movement, tensile forces could be transferred possibly and effectively by means of the MDBC. The concept of MDBC will be beneficial in the overall exploration of the function of the MDB.