中国组织工程研究
中國組織工程研究
중국조직공정연구
Journal of Clinical Rehabilitative Tissue Engineering Research
2013年
22期
3998-4004
,共7页
骨关节植入物%人工假体%膝关节%三维%动态有限元%力学分析%生物力学%前交叉韧带%后交叉韧带%髌股关节%受力%模型%省级基金
骨關節植入物%人工假體%膝關節%三維%動態有限元%力學分析%生物力學%前交扠韌帶%後交扠韌帶%髕股關節%受力%模型%省級基金
골관절식입물%인공가체%슬관절%삼유%동태유한원%역학분석%생물역학%전교차인대%후교차인대%빈고관절%수력%모형%성급기금
背景:膝关节具有解剖结构复杂性,活动多样性的特点.目前人体膝关节的生物力学研究由于不能进行直接的人体实验而进展缓慢,在尸体上进行实验又不具备正常人体的生理环境,其实验结果并不准确.目的:采用了工程学的有限元分析方法,在无创、活体的条件下,研究膝关节各部位的受力情况.方法:利用CT图像建立膝关节的三维动态有限元模型,在膝关节0°-90°范围内分析前后交叉韧带和髌股关节的受力.结果与结论:前交叉韧带在屈膝0°时张力最大,然后逐渐减小,在屈膝50°-90°之间无明显变化,而后交叉韧带恰恰相反,在屈膝0°-50°时变化不大,之后逐渐增大,屈膝90°时达到最大值.髌股关节受力分析发现,髌股关节的压力是随着角度逐渐增大的.提示膝关节动态三维有限元模型能够逼真模拟膝关节活动,研究正常人膝关节各部位的受力,是骨科生物力学分析的有效工具.
揹景:膝關節具有解剖結構複雜性,活動多樣性的特點.目前人體膝關節的生物力學研究由于不能進行直接的人體實驗而進展緩慢,在尸體上進行實驗又不具備正常人體的生理環境,其實驗結果併不準確.目的:採用瞭工程學的有限元分析方法,在無創、活體的條件下,研究膝關節各部位的受力情況.方法:利用CT圖像建立膝關節的三維動態有限元模型,在膝關節0°-90°範圍內分析前後交扠韌帶和髕股關節的受力.結果與結論:前交扠韌帶在屈膝0°時張力最大,然後逐漸減小,在屈膝50°-90°之間無明顯變化,而後交扠韌帶恰恰相反,在屈膝0°-50°時變化不大,之後逐漸增大,屈膝90°時達到最大值.髕股關節受力分析髮現,髕股關節的壓力是隨著角度逐漸增大的.提示膝關節動態三維有限元模型能夠逼真模擬膝關節活動,研究正常人膝關節各部位的受力,是骨科生物力學分析的有效工具.
배경:슬관절구유해부결구복잡성,활동다양성적특점.목전인체슬관절적생물역학연구유우불능진행직접적인체실험이진전완만,재시체상진행실험우불구비정상인체적생리배경,기실험결과병불준학.목적:채용료공정학적유한원분석방법,재무창、활체적조건하,연구슬관절각부위적수력정황.방법:이용CT도상건립슬관절적삼유동태유한원모형,재슬관절0°-90°범위내분석전후교차인대화빈고관절적수력.결과여결론:전교차인대재굴슬0°시장력최대,연후축점감소,재굴슬50°-90°지간무명현변화,이후교차인대흡흡상반,재굴슬0°-50°시변화불대,지후축점증대,굴슬90°시체도최대치.빈고관절수력분석발현,빈고관절적압력시수착각도축점증대적.제시슬관절동태삼유유한원모형능구핍진모의슬관절활동,연구정상인슬관절각부위적수력,시골과생물역학분석적유효공구.
@@@@BACKGROUND: Knee joint has the characteristics of complex anatomical structure and active diversity. The development of the biomechanical research of human knee joint is slow as in vivo experiments cannot be conducted. The experiments performed on corpse do not have the normal physiological environment of the human body, so the results are not accurate. OBJECTIVE: To investigate the force condition on different parts of the knee joint with engineering finite element analysis method in non-invasive and in vivo conditions. METHODS: CT image was used to build dynamic three-dimensional finite element model of the knee joint. The force on the anterior cruciate ligament, posterior cruciate ligament and patel ofemorel joint was analyzed in the range of 0°-90° of knee joint. RESULTS AND CONCLUSION: According to our study we found that the anterior cruciate ligament had the largest tension when the knee joint flexed at 0°, then gradual y decreased. There was no significant change when the knee joint flexed at 50° to 90°. The posterior cruciate ligament had the opposite changing trend: there was no significant change when the knee joint flexed between 0° to 50°, and then gradual y increased, and the posterior cruciate ligament had the largest tension when the knee joint flexed at 90°. The analysis of the stress experienced on patel ofemorel joint showed the stress on the patel ofemorel joint was gradual y increased along with the increasing of the angle. The dynamic three-dimensional finite element model of the knee joint was able to simulate the motion of knee joint. Studying the stress experienced on different parts of the human knee joint is an important tool for biomechanics analysis in orthopedics.
