中国组织工程研究与临床康复
中國組織工程研究與臨床康複
중국조직공정연구여림상강복
JOURNAL OF CLINICAL REHABILITATIVE TISSUE ENGINEERING RESEARCH
2008年
39期
7773-7776
,共4页
李禾%叶启彬%白建鹏%高春华%汪爱媛
李禾%葉啟彬%白建鵬%高春華%汪愛媛
리화%협계빈%백건붕%고춘화%왕애원
脊柱%短节段%内固定%刚度
脊柱%短節段%內固定%剛度
척주%단절단%내고정%강도
背景:自行研制脊柱滑脱、骨折撑开复位固定装置,最大特点是它的撑开复位内固定功能,完全融合到钢板设计上,不需过多手术器械来提供.减少手术出血和创伤.目的:测试短节段猪脊柱标本在完整、失稳后及撑开复位内固定系统(the Distraction Reduction Fixation System,DRFS)内固定后的刚度变化.设计、时间及地点:对比观察实验,于2004-12/2005-12在解放军总医院骨科研究所生物力学实验室完成.材料:选择市购新鲜猪腰椎脊柱标本(T11~S2节段)12其,将标奉上下两个节段交叉打入克氏针以利固定,制成腰1~7节段的猪脊柱标本.方法:测定完整标本在前屈、后伸、侧屈及旋转时的刚度;切除椎间盘、小关节及前后纵韧带松解脊梓,测定其各项运动刚度;用撑开复位内同定系统进行短节段内固定后重复测试各项运动刚度.主要观察指标:完整、失稳及内固定后脊柱各项运动刚度测试结果.结果:与完整脊柱的刚度相比,失稳后脊柱各项运动的刚度均明显减少(P<0.05);内固定后脊柱各项运动的刚度均明显高于失稳后脊柱(P<0.05);内固定后脊柱前屈、侧届及旋转运动的刚度与完整标本比较差异无显著性意义(P>0.05),后伸运动的刚度明显高丁完整脊柱(P<0.05).结论:从生物力学角度证实了脊柱失稳后经撑开复位内固定系统短节段固定后的即刻刚度明显增高.但因其为后路固定,固定后脊柱标本与完整脊柱标本相比后伸活动受限.
揹景:自行研製脊柱滑脫、骨摺撐開複位固定裝置,最大特點是它的撐開複位內固定功能,完全融閤到鋼闆設計上,不需過多手術器械來提供.減少手術齣血和創傷.目的:測試短節段豬脊柱標本在完整、失穩後及撐開複位內固定繫統(the Distraction Reduction Fixation System,DRFS)內固定後的剛度變化.設計、時間及地點:對比觀察實驗,于2004-12/2005-12在解放軍總醫院骨科研究所生物力學實驗室完成.材料:選擇市購新鮮豬腰椎脊柱標本(T11~S2節段)12其,將標奉上下兩箇節段交扠打入剋氏針以利固定,製成腰1~7節段的豬脊柱標本.方法:測定完整標本在前屈、後伸、側屈及鏇轉時的剛度;切除椎間盤、小關節及前後縱韌帶鬆解脊梓,測定其各項運動剛度;用撐開複位內同定繫統進行短節段內固定後重複測試各項運動剛度.主要觀察指標:完整、失穩及內固定後脊柱各項運動剛度測試結果.結果:與完整脊柱的剛度相比,失穩後脊柱各項運動的剛度均明顯減少(P<0.05);內固定後脊柱各項運動的剛度均明顯高于失穩後脊柱(P<0.05);內固定後脊柱前屈、側屆及鏇轉運動的剛度與完整標本比較差異無顯著性意義(P>0.05),後伸運動的剛度明顯高丁完整脊柱(P<0.05).結論:從生物力學角度證實瞭脊柱失穩後經撐開複位內固定繫統短節段固定後的即刻剛度明顯增高.但因其為後路固定,固定後脊柱標本與完整脊柱標本相比後伸活動受限.
배경:자행연제척주활탈、골절탱개복위고정장치,최대특점시타적탱개복위내고정공능,완전융합도강판설계상,불수과다수술기계래제공.감소수술출혈화창상.목적:측시단절단저척주표본재완정、실은후급탱개복위내고정계통(the Distraction Reduction Fixation System,DRFS)내고정후적강도변화.설계、시간급지점:대비관찰실험,우2004-12/2005-12재해방군총의원골과연구소생물역학실험실완성.재료:선택시구신선저요추척주표본(T11~S2절단)12기,장표봉상하량개절단교차타입극씨침이리고정,제성요1~7절단적저척주표본.방법:측정완정표본재전굴、후신、측굴급선전시적강도;절제추간반、소관절급전후종인대송해척재,측정기각항운동강도;용탱개복위내동정계통진행단절단내고정후중복측시각항운동강도.주요관찰지표:완정、실은급내고정후척주각항운동강도측시결과.결과:여완정척주적강도상비,실은후척주각항운동적강도균명현감소(P<0.05);내고정후척주각항운동적강도균명현고우실은후척주(P<0.05);내고정후척주전굴、측계급선전운동적강도여완정표본비교차이무현저성의의(P>0.05),후신운동적강도명현고정완정척주(P<0.05).결론:종생물역학각도증실료척주실은후경탱개복위내고정계통단절단고정후적즉각강도명현증고.단인기위후로고정,고정후척주표본여완정척주표본상비후신활동수한.
BACKGROUND:Self-made Distraction Reduction Fixation System is characterized by Distraction Reduction Fixation functions,which can completely fuse to the design of steel plate,and by no need to provide many surgical instruments,by reduction of bleeding and trauma.OBJECTIVE:To test changes in the stiffness of porcine short spinal segments in integrity and following destabilizing and internal fixation of the Distraction Reduction Fixation System.DESIGN,TIME AND SETTING:The control observation experiment was performed at the Laboratory of Biodynamics,Institute of Onhopedics,General Hospital of Chinese PLA from December 2004 to December 2005.MATERIALS:Twelve fresh porcine lumbar spines(T11-S2 segments)were bought from a market.Upper and lower segments were crossed and inserted with Kirschner wire to make porcine spine samples of the L1-7 segments.METHODS:Stiffness of intact samples was recorded during forward-bending,backward-bending,lateral-bending and axial rotation.Intervertebral discs,facet ioints,anterior and posterior longitudinal ligaments were removed to loose the spine.Stifrness of each motion was measured.Stiffness tests were repeated again after internal fixation on short segments using Distraction Reduction Fixation System.MAIN OUTCOME MEASURES:Stiffness in the intact,unstable and internal fixed spines during each motion.RESULTS:The stiffness iu unstable porcine spine were significantly lower than those in intact porcine spine(P<0.05),but the stiffness after internal fixation was significantly higher than in unstable porcine spine(P<0.05).No significant difference was detected in stifiness during forward-bending,lateral-bending and axial rotation(P>0.05)except that it was significantly higher during backward.bending after internal fixation compared with the intaet spine(P<0.05).CONCLUSION:Biodynamics confirms that the stiffness in short-segment fixation porcine after using Distraction Reduction Fixation System is markedly increased than in unstable porcine spine,except during backward-bending,which is comparable with that in intact porcine spine.