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《记忆合金支架在椎体骨折中的实验研究.pdf》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、中国微创外科杂志2014年8月第4_鲞箜塑』!垡:生!!:!:!:·751·实验研究·记忆合金支架在椎体骨折中的实验研究杨益民”张智李萌任志伟马巍(西安交通大学第一附属医院骨科,西安710061)【摘要】目的探讨自主研制的镍一钛记忆合金椎体支架(memoryalloyvertebralstent)治疗椎体压缩性骨折的可行性。方法将成人尸体胸腰椎脊柱标本制成压缩性骨折模型,分成球囊扩张后植入镍一钛记忆合金椎体支架组(PKP+支架组)、直接植入镍一钛记忆合金椎体支架组(PVP+支架组)及球囊扩张后骨水泥填充组(PKP+PMMA组)。手术前后测量椎体高度,比较3组压缩
2、椎体复位程度。结果3组术后椎体高度均明显高于术前,PKP+支架组、PVP+支架组和PKP+PMMA组的椎体高度分别从术前的(1.59±0.08)am、(1,68±0,08)am和(1。66-i-0.11)cm复位至术后的(2.00±0.09)cm、(1.87±0.04)cm和(1.99±0.09)cm(t:一9.781、一7.952、一18.213,P=0.000、0.001、0.000)。各组手术前后椎体高度差比较,PKP+支架组[(0.39±0.09)am]和PKP+PMMA组[(0,33±0.04)em]明显大于PVP+支架组[(0.19±0.06)am]
3、(P:0.000,0,003),而PKP+支架组与PKP+PMMA组差异无显著性(P=0.172)。结论镍一钛记忆合金椎体支架能有效地支撑、复位压缩的椎体终板,是对无神经症状的椎体骨折治疗方式的一种新的探索。【关键词】镍一钛记忆合金;椎体压缩性骨折;椎体后凸成形术中图分类号:R683.2文献标识:A文章编号:1009—6604(2014)08—0751—04doi:10.3969/j.issn.1009—6604.2014.08.025ExperimentalStudyofMemoryAlloyStentintheTreatmentofVertebralComp
4、ressionFractureYimin,ZhangZhi,LiMeng,etal,DepartmentofOrthopedics,TheFirstAffiliatedHospitalofXi’anJiaotongUniversity,Xi’an710061,ChinaCorrespondingauthor:ynYimin,E—mail:guke47@126.~om【Abstract】0bjectiveToevaluatethefeasibilityofaself—designedNi—Timemoryalloyvertebralstentinthetreatm
5、entofvertebralcompressionfractures.MethodsExperimentalthoracic—lumbarfracturemodelsmadefromadultcadaververtebralspecimenswererandomlyassignedinto3groupsfortesting:percutaneousballoonkyphoplastywithimplantedNi—Timemoryalloyvertebralstent(PKP+stentgroup),pereutaneousvertebroplastywithi
6、mplantedNi·Timemoryalloyvertebralstent(PVP+stentgroup),andpereutaneousballoonkyphoplastywithimplantedpolymethylmethacrylatecement(PKP+PMMAgroup).Thevertebralheightwasmeasuredbeforeandafterthethreekindsofoperations,respectively,tocomparetherestorationofcompressionfractures.ResultsInal
7、lthethreegroups.thevertebralheightofpostoperationwassignificantlyhigherthanthepreoperation.ThevertebralheightofthePKP+stentgroup,PVP+stentgroup,andPKP+PMMAgroupwasincreasedfrom(1.59±0.08)cm,(1.68土0.08)em,and(1.66±0.11)cmbeforetheoperationto(2.00±0.09)am,(1.87±0.04)am,and(1.99±009)ama
8、ftertheopera
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