Topology of the cervical spine for the anterior spinal surgery
| Project/Area Number |
04807104
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| Research Category |
Grant-in-Aid for General Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Research Field |
Cerebral neurosurgery
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| Research Institution | Kanazawa Medical University, Department of Neurosurgery |
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Principal Investigator |
KADOYA Satoru Kanazawa Medical University, Department of Nuerosurgery.Professor, 医学部, 教授 (90064518)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Nobutaka Kanazawa Medical University, Department of Nuerosurgery.Assistant, 医学部, 助手 (00158289)
NAKAMURA Tsutomu Kanazawa Medical University, Department of Nuerosurgery.Associate professor, 医学部, 助教授 (30064603)
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| Project Period (FY) |
1992 – 1993
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| Project Status |
Completed (Fiscal Year 1993)
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| Budget Amount *help |
¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥400,000 (Direct Cost: ¥400,000)
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| Keywords | Cadaver / Cervical spine / Anterior approach / Topology / MR image / CT / cadaver / cervical spine / vertebral artery / anterior root exit zone / fopology / cervical nerve / anterior approach |
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| Research Abstract |
Situational relationships of the vertebral body, nerve roots, and vertebral artery were studied with the cervical vertebrae of 22 cadavers in stock for the laboratory course of anatomy, and their MR images and CT were taken and discussed. The distance from the upper edge of the sixth cervical vertebral body to the vertebral artery was 24 mm at maximum and 14 mm at minimum with an average of 20.3 mm, and that from the outer edge of the dura mater to the vertebral artery ranged from 16 mm at maximum to at minimum with the average of 9.7 mm. The bottom end of the anterior root exit zone(AREZ) was apart from the upper posterior edge of the sixth cervical vertebra by 25 mm at maximum and 0 at minimum with the average 9 mm, and the range of AREZ was 32 mm maximally and 10 mm minimally with an average of 14 mm. There were large individual differences in the course taken by the vertebral artery, and one case showed a greatly winding course so that the artery was compressing the sixth right nerve root. At the time of anterior operation for cervical vertebral disease, the location of vertebral artery should be thoroughly ascertained. The location of AREZ also varies among individuals, which suggests a basis for the individual differences in symptoms arizing from the level of pathological change. Mr imaging and CT scan were taken for excised cervical vertebrae. The CT scans gave clearer relationships between the vertebral aretery and the vertebral body and intervertebral disc than a CT scan taken in vivo. For instance, the vertebral artery appeared closer to the vertebral body and intervertebral disk than exposed. In the MR images, the outer periphery of the spinal cord became more distinct because of the absence of spinal fluid. In the T2 weighted images, the outer periphery of the spinal cord was observed as a long T2 images, and part of the area which was considered to be spinal fluid in th T2 image taken in vivo may have represented the spinal cord.
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Report
(3 results)
Research Products
(5 results)
