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ID:33983829
大小:1.93 MB
页数:40页
时间:2019-03-03
《纵向生理加压外固定器治疗胫骨骨折的生物力学分析》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、纵向生理加压外固定器治疗胫骨骨折的生物力学研究VerticalphysiologicalcompressionexternalfixationfortreatmentoftibialfracturesbiomechanicalstudyRenkun(OrthopaedicsandTraumaofTraditionalChineseMedicine)DirectedbySunYongqiangAbstractObjective:Longitudinalassessmentofphysiologicalcompressionexternalfixatorandunilateralext
2、ernalfixationafterthemulti-functionalbio-mechanicsindicatorsanddifferencesintherateofstressshielding.Methods:The8freshmoisttibialspecimensweretakeninyoungandmiddle-agedfreshfrozencorpsefortheaccidentandthesuddendeathofbraininjury.Andtheywereattheageof20to40yearsold.Theywereharvestedafter6hinaf
3、terthedeath,removalofallsofttissueandlocalanatomicalvariationsandchangesinbonemineraldensitycausedbydegenerativediseasesandcancerandmetabolicdiseasesanddeformities.Sealed,storedin-20°refrigeratorspare.Theywererandomlydividedintotestinggroupandcontrollinggroupandeachgrouphad4tibialspecimens.The
4、tibialspecimenstakenbefore6hoursweremadeintomiddlefracturewithwiresaw.Agroupwerefixedwiththephysiologicalpressureexternalfixatorandtheothergroupwerefixedwiththeunilateralmultifunctionalexternalfixator.Eachperformanceofbiomechanicswasdoneontestmachine.Atlast,weusedSPSS13.0softwarepackagetoanaly
5、zerelateddatagettingofexperiment.Physicalpressurebyexperimentthattheverticalexternalfixatorhasagoodbio-mechanicalproperties,boththeimplementationofbiologicalfixationofthefracture,butalsotoreducetheprocessoffixationoffixedpairsoflimbsofthestressshieldingeffect,itmayalsohaveacontinuingfracturest
6、ressstimulation,promotingfracturerecovery.Result:Verticalphysiologicalcompressionexternalfixatorandunilateralexternalfixationmultifunctionalmiddletransversefractureoftibiaspecimens,thestressanalysisshowedthatbothinstrength,stiffnessandstabilitywerenosignificantdifferences(P>0.05),canbeeffectiv
7、einfracturefixationhasgoodstability,earlytomeetthebasicneedsofthebearingleginlinewiththebiomechanicalpropertiesoffracturefixationrequirement.Stressshieldingrateweresignificantlydifferent(P2摘要<0.05),verticalphysicalpressureissuperiortoun
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