Impact and clinical significance of pedicle length on spinal canal and intervertebral foramen area

International Journal of Clinical and Experimental Medicine

Xin Mei¹  Jun Zou¹  Ruofu Zhu¹  Hai Zhu¹  Chenxi Yuan¹  Wang Wei¹  Dawei Song¹  Huilin Yang¹ 

关键词: Spinal stenosis;    pedicle length;    finite element method;    osteotomy;   

DOI  :  

学科分类：医学（综合）

来源: e-Century Publishing Corporation

【 摘 要 】

The aim of this study was to measure changes in the cross-sectional area of the spinal canal and the area of the intervertebral foramen for each pedicle segment before and after the pedicle extension using computer-simulated transpedicular osteotomy to provide a theoretical basis for clinical decompression in the lumbar spinal canal. Using spiral CT scanning of the original lumbar spine, a finite element model was established. The pedicle was cut and extended by 2 mm, 4 mm, 6 mm, and 8 mm for respective modeling. The changes in the area of each plane of the vertebral canal and the area of the intervertebral foramen were measured. With the gradual extension of the pedicle, the areas of the spinal canal and intervertebral foramen also significantly increased compared with those of the original lumbar spine (P<0.05). The extension of the pedicle using transpedicular osteotomy can significantly increase the cross-sectional area of the lumbar canal and the area of the intervertebral foramen. This finding provides a new theoretically practicable method for the clinical decompression of the lumbar spinal canal.

【 授权许可】

Unknown