腰椎弓根延长术截骨部位与神经根关系的解剖学研究

doi:10.13418/j.issn.1001-165x.2014.04.005

Abstract

Abstract:

Objective　The purpose of this research was to determine the anatomic relations between the lumbar pedicle-lengthening osteotomy site and the adjacent nerve roots and to provide anatomic parameters for the lumbar pedicle-lengthening osteotomy procedure.　Methods　Sixteen adult embalmed cadavers were used for this study of the lumbar spine. After removal of soft tissue, spinous processes, laminae, facets and transverse processes of T12~S1 vertebrae, the dural sac, nerve roots and lumbar pedicles were exposed. Lumbar pedicles were carefully ground to the junction of the pedicle and vertebral body. The direct measurements, including the distance from the superior border of the pedicle to inferior limit of the adjacent nerve root (PSRD), the distance from the inferior border of the pedicle to the superior limit of the adjacent nerve root (PIRD), the distance between the medial border of the pedicle and the lateral limit of the dural sac or adjacent nerve root (PMRD) and the distance from the lateral border of the pedicle to the medial limit of the adjacent nerve root (PLRD) were made bilaterally. Results Average distance from the lumbar pedicle to the adjacent nerve roots superiorly, inferiorly, medially and laterally at all levels ranged from 4.9 to 8.6 mm, 1.0 to 2.5 mm,0 to 1.6 mm, 0.7 to 11.5 mm, respectively. There was no significant difference between left and right for PSRD, PIRD, PMRD and PLRD (P>0.05). There was also no significant difference between the males and females (P>0.05).　Conclusion　Lumbar adjacent nerve roots medially and inferiorly were injured more easily than the superiorly and laterally. The osteotomic procedure to the medial and inferior pedicle bone edge should be performed more carefully under the fluoroscopic guidance.

Key words: Lumbar pedicle; , Nerve root; , Pedicle-lengthening; , Applied Anatomy

CLC Number:

R323.43

LI Feng, XIAO Zhao-Meng, JIAN Lei, FANG E-Feng, OU Yang-Jun. The anatomic study of relations between the lumbar pedicle-lengthening osteotomy site and the adjacent nerve roots[J]. Chinese Journal of Clinical Anatomy, 2014, 32(4): 392-395.

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The anatomic study of relations between the lumbar pedicle-lengthening osteotomy site and the adjacent nerve roots

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