机构：[1]Department of Orthopaedics, Children’s Hospital of Hebei Province, No.133, Jianhua Street, Yuhua District, Shijiazhuang 050031, China.[2]Department of Orthopaedics, the Third Hospital of Shijiazhuang, No. 15 South of Tiyu Street, Shijiazhuang 050011, Hebei, China.[3]Department of Orthopaedics, Beijing Children’s Hospital, Capital Medical University, No. 56 Nan-li-shi Road, Beijing 100045, China.临床科室烧伤整形外科首都医科大学附属北京儿童医院
BackgroundLittle data are available regarding the effects of pedicle screws on the intervertebral disc stress for different spinal segments. The aim of this study was to analyze the intervertebral disc stress in response to the placement of pedicle screws.MethodsT3-4, T11-12, T15-L1, L3-4, and L4-5 intervertebral disc segments from six porcine spine specimens were harvested. A compressive load of 200N was applied both before and after the pedicle screw was implanted on the left side of each target segment; the resulting pressure was measured during vertical, 5 degrees anterior flexion, 5 degrees posterior extension, and 5 degrees lateral bending.ResultsThe posterior intradiscal pressures of the intervertebral disc were significantly lower in the fixed group than in the unfixed group for all segments during vertical, 5 degrees anterior flexion, and 5 degrees posterior extension. The left pressures of the intervertebral disc were significantly lower in the fixation group for all segments. During 5 degrees lateral bending, the left intervertebral disc pressures were significantly lower in the fixation group. Lower mean pressures were observed in the fixed group.ConclusionsUnilateral pedicle screws can effectively reduce the pressure of the fixed lateral intervertebral disc. Moreover, it can change the pressure distribution of the intervertebral disc and reduce the pressure of the entire intervertebral disc, especially the posterior side of the intervertebral disc.
基金：
Key Project of Medical Scientific Research of Hebei Province [04096]; Key Research and Development Plan of Hebei Province [18277745D]
第一作者机构：[1]Department of Orthopaedics, Children’s Hospital of Hebei Province, No.133, Jianhua Street, Yuhua District, Shijiazhuang 050031, China.
通讯作者：
通讯机构：[1]Department of Orthopaedics, Children’s Hospital of Hebei Province, No.133, Jianhua Street, Yuhua District, Shijiazhuang 050031, China.
推荐引用方式(GB/T 7714)：
Meng Zhao,Wang Chen,Tian Li-Jun,et al.Pressure distributions inside intervertebral discs under unilateral pedicle screw fixation in a porcine spine model[J].JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH.2018,13(1):-.doi:10.1186/s13018-018-0962-3.
APA：
Meng, Zhao,Wang, Chen,Tian, Li-Jun,Zhang, Xue-Jun,Guo, Dong&Zou, Yan.(2018).Pressure distributions inside intervertebral discs under unilateral pedicle screw fixation in a porcine spine model.JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH,13,(1)
MLA：
Meng, Zhao,et al."Pressure distributions inside intervertebral discs under unilateral pedicle screw fixation in a porcine spine model".JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH 13..1(2018):-
