Scanning electron microscopy of myodural bridge in dog

ZHANG Zhi-Hong; ZHANG Ying; SUN Jing-Xian; DING Shuai-Wen; MA Guo-Jun; CHI Yan-Yan; YU Sheng-Bo; ZHENG Nan; SUI Hong-Jin

doi:10.16098/j.issn.0529-1356.2020.06.019

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Acta Anatomica Sinica ›› 2020, Vol. 51 ›› Issue (6) : 929-933. DOI: 10.16098/j.issn.0529-1356.2020.06.019

Anatomy

Scanning electron microscopy of myodural bridge in dog

ZHANG Zhi-hong¹ ZHANG Ying¹ SUN Jing-xian² DING Shuai-wen³ MA Guo-jun³ CHI Yan-yan¹ YU Sheng-bo¹ ZHENG Nan^1* SUI Hong-jin^1*

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Abstract

Objective To observe the form of fibers connection of myodural bridge (MDB) between the rectus capitis posterior minor muscle (RCPmi) and the posterior atlanto-occipital membrane (PAOM), the PAOM and the spinal dura mater (SDM) in the atlanto-occipital space of dogs with scanning electron microscope (SEM). Methods The dense connection tissues (MDB) among the RCPmi, PAOM and SDM of six dogs were scanned with a SEM. The form of fibers connection between the RCPmi and PAOM, the PAOM and SDM in the atlanto-occipital space was observed, photographed, and documented. Results The MDB fibers connection existed between the RCPmi and the PAOM, and between the PAOM and the SDM. The MDB fibers between the RCPmi and the PAOM were parallelly arranged and inserted into the PAOM at an acute angle, and continued into the superficial layer of the back of PAOM. The MDB fibers between the PAOM and the SDM converged into several bundles. Each MDB bundle was covered by membrane. This membrane became continuous with the superficial membrane of SDM, meanwhile fibers of the membrane were interwoven with the surface fibers of SDM. Conclusion The interweaving fibers of the MDB with the SDM indicates that MDB fiber may withstand great tension.

Key words

Myodural bridge / Posterior atlanto-occipital membrane / Rectus capitis posterior minor muscle / Spinal dura mater / Scanning electron microscopy / Dog

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ZHANG Zhi-hong ZHANG Ying SUN Jing-xian DING Shuai-wen MA Guo-jun CHI Yan-yan YU Sheng-bo ZHENG Nan SUI Hong-jin. Scanning electron microscopy of myodural bridge in dog[J]. Acta Anatomica Sinica. 2020, 51(6): 929-933 https://doi.org/10.16098/j.issn.0529-1356.2020.06.019

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