RT Journal Article
T1 Suboccipital myodural bridges revisited: Application to cervicogenic headaches
A1 Kitamura, Kei
A1 Cho, Kwang Ho
A1 Yamamoto, Masahito
A1 Ishii, Michitake
A1 Murakami, Gen
A1 Rodríguez Vázquez, José Francisco
A1 Abe, Shinichi
AB There seems to be no complete demonstration of the suboccipital fascial configuration. In 30 human fetuses near term, we found two types of candidate myodural bridge: (1) a thick connective tissue band running between the rectus capitis posterior major and minor muscles (rectus capitis posterior major [Rma], rectus capitis posterior minori [Rmi]; Type 1 bridge; 27 fetuses); and (2) a thin fascia extending from the upper margin of the Rmi (Type 2 bridge; 20 fetuses). Neither of these bridge candidates contained elastic fibers. The Type 1 bridge originated from: (1) fatty tissue located beneath the semispinalis capitis (four fetuses); (2) a fascia covering the multifidus (nine); (3) a fascia bordering between the Rma and Rmi or lining the Rma (13); (4) a fascia covering the inferior aspect of the Rmi (three); and (5) a common fascia covering the Rma and obliquus capitis inferior muscle (nine). Multiple origins usually coexisted in the 27 fetuses. In the minor Type 2 bridge, composite fibers were aligned in the same direction as striated muscle fibers. Thus, force transmission via the thin fascia seemed to be effective along a straight line. However, in the major Type 1 bridges, striated muscle fibers almost always did not insert into or originate from the covering fascia. Moreover, at and near the dural attachment, most composite fibers of Type 1 bridges were interrupted by subdural veins and dispersed around the veins. In newborns, force transmission via myodural bridges was likely to be limited or ineffective. The postnatal growth might determine a likely connection between the bridge and headache.
PB Wiley
SN 0897-3806
YR 2019
FD 2019-06-10
LK https://hdl.handle.net/20.500.14352/109396
UL https://hdl.handle.net/20.500.14352/109396
LA eng
NO Kitamura K, Cho KH, Yamamoto M, Ishii M, Murakami G, Rodríguez-Vázquez JF, Abe SI. Suboccipital myodural bridges revisited: Application to cervicogenic headaches. Clin Anat. 2019 Oct;32(7):914-928. doi: 10.1002/ca.23411
DS Docta Complutense
RD 5 abr 2025