中国组织工程研究与临床康复2011，Vol.15Issue(26)：4798-4803,6.DOI:10.3969/j.issn.1673-8225.2011.26.013
成人颈椎椎弓根螺钉在儿童腰椎应用的可行性
Feasibility of adult cervical pedicle screw in the lumbar spine of young children
摘要
Abstract
BACKGROUND: Because the vertebrae of children aged 1 to 3 years are not fully mature, there is no specific pedicle screw for children At present, the existing pedicle screw with the smallest diameter is for adult cervical lateral mass or pedicle screw OBJECTIVE: To compare the biomechanical changes of adult cervical pedicle screw used in cervical pedicle fixation of adult pigs and lumbar pedicle fixation of young pigsMETHODS: C3-s segments for six fresh adult pigs and lumbar spinal specimens from six 8-week-old young pigs were selected to prepare 54 single vertebrae with 108 pedicles Adult cervical pedicle screw was placed into the prepared pedicles, and the maximum axial pull-out strength was detected using biomechanical methodsRESULTS AND CONCLUSION: The maximum axial pull-out strength of the cervical specimen was lower than that of the lumbar specimen, but there was no significant difference (P> 0 05) The mean pull-out strength of Li was significantly lower than that of L3 (P ＜ 0 05) The mean pull-out strength of C5 was significantly higher than that of C3 (P ＜ 0 05) There was a significant difference between the bone marrow density of the cervical and lumbar specimens (P＜ 0 01) From this study, we got the preliminary experimental foundation about applying adult cervical pedicle screw to the lumbar spine of young children from the viewpoint of axial pull-out strength关键词
椎弓根螺钉/成人/颈椎/幼儿/腰椎/可行性分类
基础医学引用本文复制引用
李现令,祈新禹,孙保胜,张钦明,李现今,张学军,李承鑫,孙琳,鲁守彦,张昆亚,于凤章..成人颈椎椎弓根螺钉在儿童腰椎应用的可行性[J].中国组织工程研究与临床康复,2011,15(26):4798-4803,6.基金项目
北京市优秀人才培养资助个人项目(20081B0300800085). （20081B0300800085）
