發(fā)布時(shí)間：2018-03-30 02:28

  本文選題：松質(zhì)骨　切入點(diǎn)：細(xì)觀模型　出處：《醫(yī)用生物力學(xué)》2015年02期

【摘要】：目的對壓力驅(qū)動(dòng)下一種松質(zhì)骨細(xì)觀模型產(chǎn)生的流動(dòng)電勢進(jìn)行數(shù)值模擬分析,了解流動(dòng)電勢在松質(zhì)骨中的分布特點(diǎn)。方法根據(jù)電場和流體的控制方程,利用有限單元法計(jì)算該松質(zhì)骨模型在一定壓力下產(chǎn)生的穩(wěn)態(tài)流動(dòng)電勢。結(jié)果松質(zhì)骨模型中靠近固體表面的流動(dòng)電勢較大,約為43.4μV;而遠(yuǎn)離固體表面的流動(dòng)電勢較小,約為19.7μV。壓力和Zeta電勢對模型的流動(dòng)電勢影響比較大,并且呈線性增長的關(guān)系。離子數(shù)濃度較低時(shí),離子數(shù)濃度對流動(dòng)電勢的影響較大;當(dāng)離子數(shù)濃度較高時(shí),離子數(shù)濃度對流動(dòng)電勢的影響很小。結(jié)論研究結(jié)果為利用電流、電磁場刺激等方法防治和治療臨床骨折、老年性骨質(zhì)疏松及其他骨科疾病提供相關(guān)的理論依據(jù)。
[Abstract]:Objective to study the distribution of fluid potential in cancellous bone by numerical simulation of the flow potential generated by a meso-model of cancellous bone driven by pressure. Methods according to the governing equations of electric field and fluid, the distribution of flow potential in cancellous bone was studied. The finite element method was used to calculate the steady flow potential of the cancellous bone model under a certain pressure. Results the flow potential near the solid surface in the cancellous bone model was larger, about 43.4 渭 V, but the flow potential far away from the solid surface was smaller. The effect of pressure and Zeta potential on the flow potential of the model is relatively large, and it is linearly increased. When the concentration of ion number is low, the influence of ion number concentration on the flow potential is greater, and when the ion number concentration is higher, the influence of ion number concentration on the flow potential is greater. Conclusion the results provide a theoretical basis for the prevention and treatment of clinical fractures, senile osteoporosis and other orthopaedic diseases by means of electric current and electromagnetic stimulation.
【作者單位】： 暨南大學(xué)力學(xué)與土木工程系;
【基金】：國家自然科學(xué)基金重點(diǎn)項(xiàng)目(11032005)
【分類號(hào)】：O441;R318.01

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相關(guān)期刊論文 前7條

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本文編號(hào)：1683969