下颈椎后路经椎弓根固定的个性化导航模板研发与其置钉准确性分析

《下颈椎后路经椎弓根固定的个性化导航模板研发与其置钉准确性分析》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、硕士学位论文128．153mm．旋转参数：X轴是．0．203±0．439。、Y轴是0．151±0．494。、Z轴是0．027±0．127。。实际克氏针六自由度的位移参数：X轴是159．675±99．162mm、Y轴是．200．456±6．719mm、Z轴．283．472±125．079mm；旋转参数：X轴是0．277±0．317。、Y轴是0．262±0．416。、Z轴O．0484-0．230。。通过配对样本t检验得知，位移在X、Y、Z轴方向均无统计学差异，p>O．05；角度在X、Y、Z方向均无统计学差异，p>O．05。实际克氏针与虚拟克氏针之间的偏差，X轴位移偏差是

2、1．58±0．66mm、Y轴位移偏差是1．96±0．84mm、Z轴位移偏差是2．33±1．15mm,X轴旋转偏差是1．43±1．18。、Y轴旋转偏差是2．43±1．67。、Z轴旋转偏差是1．144-0．50。。结论本研究应用采集下颈椎标本，模拟后路经椎弓根固定手术，运用三维重建技术及配准技术，具有一定的临床应用前景。但是，本研究与临床实际应用还有较大的差别，此个性化导航模板的造型及其精度尚需进一步改进。关键词下颈椎导航模板椎弓根螺钉逆向工程配准V硕士学位论文Thedevelopmentonpersonalizednavigationtemplateofposteri

3、ortranspediclefixationoflower-_--cervicalvertebraeanditsaCCUraCVevaluationsIntroductionNAME：SoNGKESUPERVISoR：LIJINAYIABSTRACTThelowercervicalpedicleSCreWfixationsystemnowhasbeenoneofthemostfrequentlyusedonein!owercervicalspinesurgeryforit’Sexcellentbiomechanicalfeature．Buttheoperationi

4、shardanddangerousduetothecomplicatedandvitalanatomystructureadjacenttopedicle，malpositionofscrewevokesthedescentofstiffnessandevenoperationfailure．It’SthekeypointtOthisoperationthatthepathofplantingscrewmustaccordwiththemacroaxisofpedicleasfaraspossible．Combinedwith3Dreconstructiontech

5、niques，weusethree—dimensionalreconstructionsoftware，thepediclescrewchannelvisualization．Thecurrentdifficultiesisthatdifferentindividualsofthelowercervicalspinethereisadifference，itisdifficulttoachieveaunifiedsetnails．，TherapiddevelopmentofRapidprototypingtechnologyinrecentyears，hasopen

6、edupanewwayforthedevelopmentofspinalsurgery．Basingonthethree-dimensionalreconstructiontechniques，rapidprototypingandreverseengineeringprinciples，wedesignandABSTRA(玎productpersonalizednavigationtemplate．Relingonvertebralbodythree-dimensionalmodelpreoperativerebuilting,weCallvisualizeoft

7、hepediclescrewchannel，toobservethepediclewallsofwhethertheperforationoccurred．VirtualdesignKirschnerpreoperativeandpostoperativekindKirschneLAfterCTscanandthree—dimensionalreconstruction，weregistrated，andcalculatedthesizeofthechangeandspatialdisplacementofthree—dimensionalpointofview