The Sigmoid Sinus

Aly, Islam; Tubbs, R. Shane

doi:10.1016/b978-0-323-65377-0.00005-2

Cited by 2 publications

(2 citation statements)

References 23 publications

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“…Analysis of sigmoid sinus sectional area of 278 patients revealed a right-side dominance pattern whenever the affected side is ipsilateral or heterolateral to the dominant sinus. This result coincides with the findings of past year’s dissection study by directly measuring human sigmoid sinuses in cadavers ( Aly and Tubbs, 2019 ; Ozalp et al, 2019 ) and the findings from a calculation of the sectional areas of 102 samples using MR examination ( Manara et al, 2010 ). From a physiological perspective, blood from the deeper parts of the brain flows through the straight sinus and opens the left transverse sinus which drains into the left sigmoid sinus, which usually smaller; the right transverse sinus receives blood from the superficial parts of the brain by the superior sagittal sinus and drains into the right sigmoid sinus, whose lumen is wider due to the flow volume ( Aly and Tubbs, 2019 ).…”

Section: Discussionsupporting

confidence: 89%

Surgical anatomy of sigmoid sinus with evaluation of its venous dominance for advances in preoperative planning

Zhu¹,

Chong²,

Jiang³

et al. 2023

Front. Neurosci.

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Microvascular decompression (MVD) is a widely adopted neurosurgery in treating cranial nerve diseases providing long-term pain relief. Improving surgical techniques has been a focus of recent studies. Venous structures such as the sigmoid sinus are essential to protect, and whose risk of destruction during surgery increases with size. The medical records of patients who went through MRI ahead of MVD surgery between Dec 2020 and Dec 2021 were reviewed. Section area of sigmoid sinus calculated from the MRI plane of auditory nerve showed a right dominance of the sinus. The improved method concerning the relationship between affected side and the dominant sigmoid sinus offered a better bone window and surgical field by planning the operation incision in advance. Intraoperative adjustment of the bone flap was avoided, and the risk of destructing the sigmoid sinus was reduced.

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Section: Discussionsupporting

confidence: 89%

Surgical anatomy of sigmoid sinus with evaluation of its venous dominance for advances in preoperative planning

Zhu¹,

Chong²,

Jiang³

et al. 2023

Front. Neurosci.

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“…15). It begins inferior to the temporal bone, posteromedial to the mastoid cells, and runs to the JF, extending through an S-shaped groove, where it meets the superior JB (51). The extracranial estimation of the intracranial venous sinuses is important for neurosurgeons to avoid venous sinus injury and resultant of blood loss or sinus occlusion with possible risk of venous infarction (52).…”

Section: The Surface Landmark For Predicting the Sigmoid Sinus (Ss) D...mentioning

confidence: 99%

Morphological analysis and morphometry of the occipital condyle and its relation to surrounding structures: implication in craniovertebral junction surgery

Thintharua

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Anatomical knowledge of the occipital condyle (OC) and its relationships to surrounding structures is important for avoiding injury during craniovertebral junction (CVJ) surgeries such as the far lateral approach (FLA). Therefore, this study was conducted to evaluate the morphology and morphometry of OC and its relationship to digastric point (DP), foramen magnum (FM), jugular foramen (JF), and hypoglossal canal (HC). The study was performed on 100 dry skulls.�Oval-like condyle was the most common OC shape, representing for 33.0% of all samples. The OC protruded into FM in 31.5 %. The average length, width and height of the OC were 21.32 ? 2.44, 10.51 ? 1.41, and 7.39 ? 1.14 mm, respectively. Extracranial orifice of HC (eHC) and intracranial orifice of HC (iHC) were commonly found 74.0% in anterior 1/3 of OC, and 45.0% in middle 1/3 of OC, respectively. The mean distance from posterior edge of the OC (OCPE) to eHC, iHC and JF were 13.70 ? 2.23 mm, 9.00 ? 1.59 mm, and 16.15 ? 2.35 mm, respectively. The most common shape of FM was hexagonal in 27.0%. The mean of anteroposterior diameter (APD) was 34.19 ? 2.46 mm, transverse diameter (TD) was 29.17 ? 2.14 mm and foramen magnum index (FMI) was 1.18. The mean distance between DP and bony landmarks, including Op-DP, OCPT-DP, and JF-DP values, were 54.54 ? 3.50, 36.72 ? 4.07, and 34.18 ? 4.15 mm, respectively. The prevalence of bilateral and unilateral posterior condylar canal (PCC) was 57.0% and 34.0%, respectively. The morphological analysis and morphometry data of OC and its relation to surrounding structures can help surgeons be aware of neurovascular injury and CVJ instability by surgery.

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The Sigmoid Sinus

Cited by 2 publications

References 23 publications

Surgical anatomy of sigmoid sinus with evaluation of its venous dominance for advances in preoperative planning

Surgical anatomy of sigmoid sinus with evaluation of its venous dominance for advances in preoperative planning

Morphological analysis and morphometry of the occipital condyle and its relation to surrounding structures: implication in craniovertebral junction surgery

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