Patterns of attachment of the myodural bridge by the rectus capitis posterior minor muscle

Yuan, Xiao-Ying; Yu, Sheng-Bo; Li, Yunfei; Chi, Yan-Yan; Zheng, Nan; Gao, Hongze; Luan, Bing-Yi; Zhang, Zhao-Xi; Sui, Hong-Jin

doi:10.1007/s12565-015-0282-1

Cited by 21 publications

(31 citation statements)

References 18 publications

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“…Many anatomical studies have focused on the connections of RCPmi in the past (Hack et al;Rutten et al;Yuan et al;Alix & Bates;Elliott et al, 2005;Zumpano et al, 2006;Hallgren, 2014;Hallgren et al, 2014;Scali et al, 2015), while few studies were related to the morphological parameters of the RCPmi. In this study, a quantitative MRI measurement of the RCPmi was developed and a reference value of imaging anatomical parameters of the RCPmi was set up.…”

Section: Discussionmentioning

confidence: 99%

“…In the past 20 years, it was proposed that through the MDBs the RCPmi might perform some physiological functions, like protecting the spinal cord from dural enfolding (Chang et al, 1992;Hack et al;McPartland et al, 1997;Fernández-de-Las-Peñas et al, 2008;Pontell et al), placing tension to the dura under (Chang et al;McPartland et al;Rutten et al, 1997;Fernández-de-Las-Peñas et al, 2008;), maintaining the integrity of the subarachnoid space (McPartland et al;Fernández-de-Las-Peñas et al, 2008), and working as a pump via the MDBs to provide power for CSF circulation (Su et al;Zheng et al;Yuan et al, 2016). Furthermore, Some clinical studies found that the pathology of the suboccipital muscles, for instance atrophy or swelling of the RCPmi, might be closely related to chronic cervical headaches (McPartland et al;Alix & Bates, 1999;Fernández-de-Las-Peñas et al, 2007;Fernández-de-Las-Peñas et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

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Anatomical Parameters of the Rectus Capitis Posterior Minor Muscle Based on a New Magnetic Resonance Scan Method

Yuan

et al. 2017

Int. J. Morphol.

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Anatomical parameters of the rectus capitis posterior minor based on a new MRI scan method. Int. J. Morphol., 35(3):1010Morphol., 35(3): -1015Morphol., 35(3): , 2017. SUMMARY:The past findings confirm that the Rectus Capitis Posterior minor (RCPmi) is connected to the cervical spinal dura mater via the Myodural Bridge (MDB) through the posterior antlanto-occipital interspace. It is hypothesized to perform some functions. Furthermore, some clinical studies found that the pathology of RCPmi might be related to chronic headaches. But few studies were related to the morphological parameters of the RCPmi. It would be conducive to performing clinical researches on the RCPmi and MDB. To explore the optimal section for measuring the RCPmi by MRI and provide imaging anatomy parameters of the RCPmi for clinical research. The RCPmi was measured in the dissection of 10 formalin-fixed cadaver specimens. The morphological parameters of the RCPmi were obtained. Based on these parameters, T2-weighted images of the RCPmi were collected from 109 healthy adults by using the MRIs with different oblique sagittal scanning angles. The parameters of length and area of the RCPmi on the scanning sections were measured using MRI workstation and Mimics software. The length of RCPmi reached a maximum at 30 degrees scanning leaned from the posterior median line through the dens of the axis in oblique sagittal section. At this scanning section, the length of RCPmi was 21.2 ± 2.6 mm in males and 19.3 ± 2.4 mm in females and the area of RCPmi was 91.9 ± 27.2 mm 2 in males and 73.3 ± 22 mm 2 in females. These parameters of RCPmi were present with significant gender differences (P < 0.05) but was not age related. Thirty degrees leaned from the median line was suggested to be the optimum scanning angle to display the RCPmi in oblique sagittal section. The reference values of length and area of the RCPmi were established for studies of hypertrophy or amyotrophy of the RCPmi.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Anatomical Parameters of the Rectus Capitis Posterior Minor Muscle Based on a New Magnetic Resonance Scan Method

Yuan

et al. 2017

Int. J. Morphol.

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“…It was further verified that the RCPmi directly gave off a tendinous subdivision and connected with the PAOM according to P45 plastination sheets observation [6, 8]. Based on structural features of the MDB, it was supposed that the MDB may play essential physiological roles in cerebrospinal fluid (CSF) circulation [8–11], tension-sensation of cervical dura mater and/or cervical dura mater position-keeping [1–13]. Consequently, the MDB may be a highly conserved structure in the evolution of terrestrial mammals such as humans.…”

Section: Introductionmentioning

confidence: 94%

“…The MDB between the RCPmi and cervical spinal dura mater was re-confirmed via anatomical dissection, MRI scanning, sheet plastination, and/or histological observation of human cadaveric specimens by studies of Mitchell [4], Humphreys [5], Nash [6] et al Furthermore, the MDB was found to be constituted by tendon-like, muscle-like, or fascia-like tissue, and the main type of fiber was tendon-like [6, 7]. It was further verified that the RCPmi directly gave off a tendinous subdivision and connected with the PAOM according to P45 plastination sheets observation [6, 8]. Based on structural features of the MDB, it was supposed that the MDB may play essential physiological roles in cerebrospinal fluid (CSF) circulation [8–11], tension-sensation of cervical dura mater and/or cervical dura mater position-keeping [1–13].…”

Section: Introductionmentioning

confidence: 99%

The myodural bridge existing in the Nephocaena phocaenoides

Liu

Zheng

et al. 2017

PLoS ONE

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Recent studies have identified that the myodural bridge (MDB) between the rectus capitis posterior minor (RCPmi) and the cervical spinal dura mater in the posterior atlanto-occipital interspace in humans. And it was supposed that the MDB may play essential physiological roles. As a result, the MDB is possibly a highly conserved structure in the evolution of mammals. However, there is little confirmative description about the existence of the MDB in marine mammals. The objective of this study was to explore the existence and the fiber property of the MDB in the Neophocaena phocaenoides. Six cadavers of the Neophocaena phocaenoides with formalin fixation were used in this study. One was used for head and neck CT scanning and three-dimensional (3D) reconstruction and suboccipital region dissection, two were for sectional observation by P45 plastinated sheets of head and neck, and three were for histological analysis of suboccipial structures. This is the first study to demonstrate the existence of the MDB in the aquatic mammals. The rectus capitis dorsal minor (RCDmi) originated from the inferior border of the occiput and inserted into the cervical spinal dura mater. At the ventral aspect of the RCDmi, the MDB directly extended through the posterior atlanto-occipital interspace and connected with the cervical spinal dura mater which was consisted of type Ⅰ collagen. In addition, the dorsal atlanto-occipital membrane was not found in the Neophocaena phocaenoides. The tendinous myodural bridge extended from the RCDmi to the spinal dura mater through the posterior atlanto-occipital interspace in the Neophocaena phocaenoides.

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“…To achieve this purpose, we wrote the English manuscripts of the comics; the second author of this article has extensive experience with state ofthe-art plastination techniques (Yuan et al, 2015). We, including the corresponding author who had regularly produced anatomical comics (Park et al, 2011;Shin et al, 2013;, then drew the comic panels for the study.…”

Section: Introductionmentioning

confidence: 99%

Comics for Laypeople Interested in Plastination

Chung

Sui

2016

Int. J. Morphol.

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SUMMARY:Exhibitions of plastinated specimens are popular around the world, but most people are not aware of the basics of plastination process because they are not interested in reading the related writings. Comics are an attractive medium and could solve this problem. The objective of this study was to enhance public comprehension of plastination using comics. Three topics were selected for the comics: the traditional ways to preserve dissected cadaver specimens, the plastination technique used to resolve the problems of the traditional ways, and the public display of the plastinated specimens. The 67 comic frames were drawn in simple style. The comics were available online (anatomy.co.kr) free of charge. The original files of the comics will be provided to those who utilize the files for making the signs or leaflets for exhibitions. The comics in this study, whether online or not, are expected to help people recognize the value of plastination; the comics' quantity and quality will be upgraded in a variety of ways.

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Patterns of attachment of the myodural bridge by the rectus capitis posterior minor muscle

Cited by 21 publications

References 18 publications

Anatomical Parameters of the Rectus Capitis Posterior Minor Muscle Based on a New Magnetic Resonance Scan Method

Anatomical Parameters of the Rectus Capitis Posterior Minor Muscle Based on a New Magnetic Resonance Scan Method

The myodural bridge existing in the Nephocaena phocaenoides

Comics for Laypeople Interested in Plastination

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