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1、临床医学DepartmentofOrthopaedics,ThirdAffiliatedHospitalofSunYat・scnUnivcr・sity.Guangzhou510630.GuangdongProvince,ChinaDongJian-wcnY^,Studyingfordoclo・rate.Attendingphysician.Depart・mentofOrthopac・dies.ThirdAffilialedHospiialofSunYat-senUniversity,Guangzhou510630.GuangdongProvince.Chinajianwendong®126
2、.comReceived:2008-09-17Accepted:2(X)8-KM4胸椎椎弓根外固定技术的临床应用☆泄健文，戎利民，刘斌，谢沛根，邱奕雁，蔡道章ClinicalapplicationofextrapedicularscrewfixationinthoracicspineDongJian-wen,RongLi-min,LiuBin,XiePei-gen,QiuYi-yan,CaiDao-zhangAbstract:From2004to2(X)7,34casesweretreatedwithextrapedicularscrewfixationinDepartmentofOrth
3、opaedics,ThirdAffiliatedHospitalofSunYat-senUniversity.Thescrewentrypoint,angle,depthanddiameterweremeasuredanddefinedonthethoracicvertebraepediclebyCTthin-slicescaninstandardproneforallcasesbeforeoperation.ThescrewentrypointwaslocatedatthelipofIransvereeprocess・Theaverageinclinationangleshouldbe1
4、0°-20’headwardand30”-40°towardneutrallinerespectively.Thescrewwasinsertedandenteredintothevertebralbodyalongtheexternalcortexofpedicle.Theintegrityofcorticalbonearouixlscrews,thedistancetosegmentalbloodvesselsandthepenetrationofcortexwereobservedafteroperationtoevaluatetheaccuracyandsafetyofscrewp
5、lacement.Among160thoracicpediclescrewsthatwereimplantedin34cases,148screws(92.5%)wereaccunilelyinsertedinsidethecostotransverseunit,and12screws(7.5%)weremisplacedaccordinglotheimageofX-rayandCTthin-slicesean.Comparedtothetranspedicularfixation,extrapedicularfixationhasadvantagesofwiderinsertionare
6、a,longerscrewandbiggercohesionangle・So.itisasaferandsimpleralternativeforthoracicposteriorfixationbecauseofitstheoreticalbiomechanicalsupcriority.DongJW,RongLM,LiuB.XiePG,QiuYY,CaiDZ・Clinicalapplicalionofextrapedicularscrewfixationinthoracicspine.ZhongguoZuzhiGongchengYanjiuyuLinchuangKangfu2008;1
7、2(44):8697-8700(China)[http://www.crter.cnhttp://en.zglckf.com]摘要：应用椎弓根外内固定技术2004/2007年在中山大学附属第三医院骨科治疗34例患者，固定前采用CT加密扫描测量进钉点、进钉点至椎体前缘的深度、进钉角度和直径，固定中椎弓根钉入点为横突尖，进钉方向为平均向头侧倾斜10°〜20。.与中线成角30。~40°，顺椎弓根外侧皮质进入椎体,固定后CT加密
