CAJ | 학술논문

目的通过获取骨骼标本中腰椎后柱结构的相关解剖参数以及健康人腰椎后柱的三维构象样本数据,设计腰椎棘板螺钉动态内固定系统.方法对20具L3～S1段骨骼标本行层次解剖,使用游标卡尺测量椎板区域的厚度以获取腰椎棘板的相关解剖参数；另对20名健康成人腰椎的L3～S1段行三维CT重建扫描,以获取腰椎后部结构三维空间构象样本数据.结果通过解剖观察与测量,棘板螺钉固定置钉区域拟设定在腰椎椎板内侧的中1/3处,椎板L3～4段厚度(6.6±0.9) mm,L5～S1段厚度(6.0±0.6)mm.长度6.5～8.0 mm的棘板螺钉符合双侧皮质骨螺钉固定的要求.结论可选择下腰椎棘突椎板区域为双侧皮质骨螺钉固定区域,椎板螺钉长度6.5～8.0 mm即可.
목적 통과획취골격표본중요추후주결구적상관해부삼수이급건강인요추후주적삼유구상양본수거,설계요추극판라정동태내고정계통.방법 대20구L3～S1단골격표본행층차해부,사용유표잡척측량추판구역적후도이획취요추극판적상관해부삼수；령대20명건강성인요추적L3～S1단행삼유CT중건소묘,이획취요추후부결구삼유공간구상양본수거.결과 통과해부관찰여측량,극판라정고정치정구역의설정재요추추판내측적중1/3처,추판L3～4단후도(6.6±0.9) mm,L5～S1단후도(6.0±0.6)mm.장도6.5～8.0 mm적극판라정부합쌍측피질골라정고정적요구.결론 가선택하요추극돌추판구역위쌍측피질골라정고정구역,추판라정장도6.5～8.0 mm즉가.
Objective To determine the lumbar anatomical structure parameters of the lumbar spine posterior column and its sample data of three-dimensional conformation,and based on these data to design the lumber laminar screw dynamic fixation system.Methods 20 human L3 ～ S1 bone specimens,the thickness of the lumber laminar region were measured to obtain the normal anatomical parameters of the lumbar laminar.And 20 healthy lumbar vertebrae L3-S1 for three-dimensional reconstruction were detected by CT scan,which could obtain the structure data of the normal lumbar posterior three-dimensional conformation,and to obtain conformational sample data of three-dimensional space of the posterior structure.Results Lumbar lamina medial 1/3 could serve as a spine laminar screw setting area by anatomical observations and measurements.Lamina thickness of L3-4 on average (6.6 ±0.9) mm,L5 ～ S1average (6.0 ± 0.6) mm.Lumber laminar screw length 6.5 ～ 8.0mm could meet the requirements of bilateral cortical fixation.Conclusion Lower lumbar spinal lamina area can serve as the region to fix the bilateral cortical bone screw,and the optimal length of the laminar screw is 6.5 ～ 8.0rmm.