IMECH-IR  > 国家微重力实验室
Alternative TitleFeasibility of adult cervical pedicle screw in the lumbar spine of young children
李现令; 张钦明; 李现今; 张学军; 李承鑫; 孙琳; 鲁守彦; 张昆亚; 于凤章; 祈新禹; 孙保胜
Source Publication中国组织工程研究与临床康复
Other AbstractBACKGROUND: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 fixation.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 pigs.METHODS:C3-6 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 methods.RESULTS 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 L1 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.
Keyword椎弓根螺钉 成人 颈椎 幼儿 腰椎 可行性
Subject Area力学
Indexed ByCSCD
Funding Organization北京市优秀人才培养资助个人项目(20081B0300800085)~~
Citation statistics
Cited Times:1[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author李现令
Recommended Citation
GB/T 7714
李现令,张钦明,李现今,等. 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.
APA 李现令.,张钦明.,李现今.,张学军.,李承鑫.,...&孙保胜.(2011).成人颈椎椎弓根螺钉在儿童腰椎应用的可行性.中国组织工程研究与临床康复,15(26),4798-4803.
MLA 李现令,et al."成人颈椎椎弓根螺钉在儿童腰椎应用的可行性".中国组织工程研究与临床康复 15.26(2011):4798-4803.
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