3D打印輔助頸椎后路椎弓根精準置釘?shù)膶嶒炑芯?/H1>
發(fā)布時間：2018-05-17 08:34
本文選題：頸椎椎弓根 + 椎弓根螺釘��； 參考：《福建醫(yī)科大學(xué)》2016年碩士論文
【摘要】：目的:探討一種基于數(shù)字化設(shè)計及3D打印技術(shù)的頸椎弓根精準置釘方法。方法:12具成人尸體頸椎標本進行薄層CT掃描、三維編輯分離C1-C7獨立的椎骨并三維重建。(1)釘?shù)啦贾?首先以三維切割的方式確定椎弓根置釘面,在置釘面上快速構(gòu)建兼顧椎骨形態(tài)學(xué)結(jié)構(gòu)的理想釘?shù)?(2)單、雙面導(dǎo)航模塊的選擇:將C1-C7分為C1、C2、C3-C6及C7四個部分,并根據(jù)有無棘突分叉選擇單、雙面導(dǎo)航模塊;(3)高精度的圖像配準:根據(jù)應(yīng)用解剖學(xué)研究的“骨面可剝離范圍”,以三維切割的方式設(shè)計并打印單、雙面導(dǎo)航模塊;(4)現(xiàn)實置釘:在12具尸體標本上實施導(dǎo)航模塊輔助頸椎后路椎弓根螺釘置入;(5)三維配準:術(shù)后再次薄層CT掃描并三維重建,術(shù)后與術(shù)前設(shè)計的模型進行三維配準,采集術(shù)前設(shè)計及術(shù)后釘?shù)赖倪M、出釘點三維坐標值;(6)統(tǒng)計分析:統(tǒng)計二者差值絕對值不同“等級精度”下的合格釘點,進行卡方檢驗。結(jié)果:(1)共置入頸椎椎弓根螺釘158枚,5枚穿出椎弓根骨質(zhì)外,穿出幅度均2mm,置釘準確率達到98.1%;(2)卡方檢驗結(jié)果顯示,當進釘點精度要求≥1.7mm時,?2=2.279,P0.05,以及出釘點精度要求≥2.7mm時,?2=3.251,P0.05;(3)C3-C7釘?shù)纼?nèi)傾角25°-40°。結(jié)論:基于3D打印技術(shù)的頸椎后路椎弓根置釘?shù)木热Q于:(1)高精度圖像配準,要點為根據(jù)“可剝離范圍”進行導(dǎo)航模塊設(shè)計及現(xiàn)實置釘;(2)理想釘?shù)涝O(shè)計,要點為以三維切割的方式快速布置釘?shù)?兼顧頸椎骨形態(tài)學(xué)結(jié)構(gòu)特點。
[Abstract]:Objective: to explore a method of cervical pedicle nail placement based on digital design and 3D printing. Methods 12 adult cadaveric cervical vertebrae specimens were scanned by thin slice CT, and the C1-C7 independent vertebrae were separated and reconstructed. The choice of a single and double-sided navigation module: the C1-C7 was divided into four parts, C1C2C3-C6 and C7, and the single one was selected according to the bifurcation of spinous process. High precision image registration: according to the applied anatomical study of "bone surface can be stripped off range", design and print a single in the form of three-dimensional cutting. In 12 cadavers, the navigation module was used to assist the posterior cervical pedicle screw placement into the cervical spine. Three dimensional registration was carried out. After the operation, thin slice CT scanning and 3D reconstruction were performed again, and the 3D registration was performed with the pre-operative model. The statistical analysis of pre-operation design and postoperation nail entry and exit point 3D coordinate value was made: the qualified nail points with different grade accuracy were counted and chi-square test was carried out. Results [WT5HZ] A total of 158 pedicle screws were inserted into the vertebral pedicle and 5 screws were inserted out of the pedicle of the cervical vertebrae, with an average puncture amplitude of 2 mm, and the accuracy of screw placement was 98.1 / 2) the chi-square test results showed that, When the precision of the point of entry and nail is 鈮，
本文編號：1900692
本文鏈接：http://sikaile.net/kejilunwen/ruanjiangongchenglunwen/1900692.html
本文選題：頸椎椎弓根 + 椎弓根螺釘��； 參考：《福建醫(yī)科大學(xué)》2016年碩士論文
【摘要】：目的:探討一種基于數(shù)字化設(shè)計及3D打印技術(shù)的頸椎弓根精準置釘方法。方法:12具成人尸體頸椎標本進行薄層CT掃描、三維編輯分離C1-C7獨立的椎骨并三維重建。(1)釘?shù)啦贾?首先以三維切割的方式確定椎弓根置釘面,在置釘面上快速構(gòu)建兼顧椎骨形態(tài)學(xué)結(jié)構(gòu)的理想釘?shù)?(2)單、雙面導(dǎo)航模塊的選擇:將C1-C7分為C1、C2、C3-C6及C7四個部分,并根據(jù)有無棘突分叉選擇單、雙面導(dǎo)航模塊;(3)高精度的圖像配準:根據(jù)應(yīng)用解剖學(xué)研究的“骨面可剝離范圍”,以三維切割的方式設(shè)計并打印單、雙面導(dǎo)航模塊;(4)現(xiàn)實置釘:在12具尸體標本上實施導(dǎo)航模塊輔助頸椎后路椎弓根螺釘置入;(5)三維配準:術(shù)后再次薄層CT掃描并三維重建,術(shù)后與術(shù)前設(shè)計的模型進行三維配準,采集術(shù)前設(shè)計及術(shù)后釘?shù)赖倪M、出釘點三維坐標值;(6)統(tǒng)計分析:統(tǒng)計二者差值絕對值不同“等級精度”下的合格釘點,進行卡方檢驗。結(jié)果:(1)共置入頸椎椎弓根螺釘158枚,5枚穿出椎弓根骨質(zhì)外,穿出幅度均2mm,置釘準確率達到98.1%;(2)卡方檢驗結(jié)果顯示,當進釘點精度要求≥1.7mm時,?2=2.279,P0.05,以及出釘點精度要求≥2.7mm時,?2=3.251,P0.05;(3)C3-C7釘?shù)纼?nèi)傾角25°-40°。結(jié)論:基于3D打印技術(shù)的頸椎后路椎弓根置釘?shù)木热Q于:(1)高精度圖像配準,要點為根據(jù)“可剝離范圍”進行導(dǎo)航模塊設(shè)計及現(xiàn)實置釘;(2)理想釘?shù)涝O(shè)計,要點為以三維切割的方式快速布置釘?shù)?兼顧頸椎骨形態(tài)學(xué)結(jié)構(gòu)特點。
[Abstract]:Objective: to explore a method of cervical pedicle nail placement based on digital design and 3D printing. Methods 12 adult cadaveric cervical vertebrae specimens were scanned by thin slice CT, and the C1-C7 independent vertebrae were separated and reconstructed. The choice of a single and double-sided navigation module: the C1-C7 was divided into four parts, C1C2C3-C6 and C7, and the single one was selected according to the bifurcation of spinous process. High precision image registration: according to the applied anatomical study of "bone surface can be stripped off range", design and print a single in the form of three-dimensional cutting. In 12 cadavers, the navigation module was used to assist the posterior cervical pedicle screw placement into the cervical spine. Three dimensional registration was carried out. After the operation, thin slice CT scanning and 3D reconstruction were performed again, and the 3D registration was performed with the pre-operative model. The statistical analysis of pre-operation design and postoperation nail entry and exit point 3D coordinate value was made: the qualified nail points with different grade accuracy were counted and chi-square test was carried out. Results [WT5HZ] A total of 158 pedicle screws were inserted into the vertebral pedicle and 5 screws were inserted out of the pedicle of the cervical vertebrae, with an average puncture amplitude of 2 mm, and the accuracy of screw placement was 98.1 / 2) the chi-square test results showed that, When the precision of the point of entry and nail is 鈮，
本文編號：1900692
本文鏈接：http://sikaile.net/kejilunwen/ruanjiangongchenglunwen/1900692.html
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