No abstract available.
Vertebral Artery Dissection* ; Vertebral Artery*

No abstract available.
Basilar Artery ; Vertebral Artery ; Vertebral Artery Dissection

No abstract available.
Patient Readmission* ; Vertebral Artery Dissection* ; Vertebral Artery*

No abstract available.
Vertebral Artery ; Vertebrobasilar Insufficiency

No abstract available.
Brain Ischemia* ; Vertebral Artery*

No abstract available.
Foramen Magnum* ; Vertebral Artery*

We report a case of atlantoaxial subluxation with bilateral high-riding vertebral artery with narrow isthmus. Because of the potential risk of bilateral vertebral artery injury, we performed atlantoaxial fixation using rod and screw instead of transarticular screw fixation. Although postoperative computed tomography reconstruction demonstrated slight breach of bilateral vertebral artery groove, postoperative angiography showed no evidence of vertebral artery injury. Though technically demanding, atlantoaxial fixation using rod and screw can be a one of the treatment options for atlantoaxial instability with bilateral high riding vertebral artery.
Angiography ; Vertebral Artery*

No abstract available.
Carotid Artery, Internal* ; Vertebral Artery*

No abstract available.
Aneurysm, False ; Brachial Plexus Neuropathies ; Vertebral Artery ; Vertebral Artery Dissection

We report a case of bilateral bridges of atlas of a Korean atlas and accompanying variation of the course of the left suboccipital nerve that was observed during the practice of the human anatomy in Seonam university, college of medicine. Bridges of atlas across the groove for the vertebral artery run inferomedially from the posterior margins of the superior articular processes to the posterior margins of the grooves. Widths of the narrowest middle portions of the bridges are 5.05 mm at the left and 0.7 mm at the right. Superior and inferior widths of left bridge are 11.6 mm and 10.9 mm, and of the right are 4.45 mm and 4.65 mm respectively. Cross-sectional areas of the foramina formed by bridges of atlas are 34.7 mm 2 at the left and 29.3 mm 2 at the right. These sizes are much smaller than the sizes of the transverse foramina of the atlas at each side, but diameters of the second and third portions of the left vertebral artery are same as 4.3 mm. At the junction between the left bridge and the posterior arch distinct suture line was observed. Because of the relatively wide bridge, the left suboccipital nerve runs more laterally than the right. It turns to the posterior, pierces the obliquus capitis inferior muscle, and branches out to adjacent suboccipital muscles. Branch to the rectus capitis posterior muscles obliquely cross over the suboccipital triangle to these muscles.
Humans ; Muscles ; Sutures ; Vertebral Artery