發(fā)布時(shí)間：2018-03-10 18:33

  本文選題：鎖骨　切入點(diǎn)：個(gè)性化鎖定鈦質(zhì)接骨板　出處：《山西醫(yī)科大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：目的:1.建立鎖骨三維有限元模型。2.根據(jù)鎖骨模型建立鎖骨鎖定接骨板模型,此模型可通過三D打印技術(shù)得到適合單個(gè)個(gè)體的個(gè)性化接骨板。3.在折彎和扭轉(zhuǎn)兩種受力狀況下,評(píng)估鎖定接骨板有限元模型的應(yīng)力分布情況。4.分析鎖骨接骨板應(yīng)力分布,明確易斷裂部位,為有效減少鎖骨內(nèi)固定術(shù)后鋼板斷裂的預(yù)防提供理論依據(jù)。方法:采用64排螺旋CT對(duì)成年健康男性鎖骨進(jìn)行平掃,得到該男性鎖骨的二維圖像數(shù)據(jù),運(yùn)用Mimicsl0.0軟件將所得數(shù)據(jù)分析、建立鎖骨三維有限元模型,根據(jù)鎖骨模型運(yùn)用UG軟件建立鎖骨鎖定接骨板模型。利用abaqus軟件評(píng)估鎖定接骨板分別向下給予200N、500N的力進(jìn)行折彎及200N.mm、500N.mm進(jìn)行軸向扭轉(zhuǎn),模擬鎖骨鎖定鈦板的受力情況,進(jìn)一步對(duì)其應(yīng)力分布進(jìn)行分析。結(jié)果:1.構(gòu)建了貼合鎖骨鈦板接骨板的三維模型和三維有限元模型。2.S型鎖骨鎖定型鈦板與直型鈦板三維有限元模型,在近端固定,遠(yuǎn)端向下垂直鈦板長(zhǎng)軸方向折彎,應(yīng)力最大部位均位于中間孔及周圍,但S型鈦板較直型鈦板應(yīng)力更加分散。3.S型鎖骨鎖定型鈦板與直型鈦板三維有限元模型,在近端固定,遠(yuǎn)端軸向扭轉(zhuǎn),其應(yīng)力最大集中部位均位于中間孔及周圍,應(yīng)力分布無明顯變化。結(jié)論:本課題根據(jù)CT掃描原始數(shù)據(jù)構(gòu)建的鎖骨鈦合金接骨板的三維實(shí)體模型,與骨的貼合性良好,此模型可通過三D打印技術(shù)得到適合單個(gè)個(gè)體的個(gè)性化接骨板。有限元分析結(jié)果基本可以模擬接骨板的實(shí)際受力情況。通過對(duì)兩種形狀的鎖骨接骨板進(jìn)行有限元分析,在側(cè)方折彎及軸向扭轉(zhuǎn)受力情況下,得出7孔鈦板的最大應(yīng)力分布位于中心孔正中。實(shí)際手術(shù)操作中,鎖骨骨折斷端與曠置鎖定孔正中存在應(yīng)力疊加,鈦板放置若能避開該應(yīng)力集中處,可有效避免術(shù)后斷板發(fā)生,為臨床實(shí)際操作提供理論指導(dǎo),并為之后對(duì)其他類型鈦質(zhì)接骨板的生物力學(xué)分析提供了參考以及技術(shù)路線。
[Abstract]:Objective: 1.To establish a three-dimensional finite element model of clavicle. According to the model of clavicle, a model of clavicular locking plate was established. The model can be used to obtain the individualized plate of clavicle by 3D printing technology. Under the condition of bending and torsion, To evaluate the stress distribution of the locking plate finite element model. 4. To analyze the stress distribution of the clavicle plate and determine the fracture site. Methods: 64 slice spiral CT was used to scan the clavicle of adult healthy male, and the two dimensional image data of the male clavicle were obtained. The three-dimensional finite element model of clavicle was established by analyzing the data with Mimicsl0.0 software. According to the clavicle model, the clavicle locking plate model was established by UG software. The locking plate was evaluated by abaqus software for bending and axial torsion of 200Nmmm500N.mm, respectively. The stress distribution was further analyzed. Results 1. Three-dimensional model of clavicular titanium plate and three-dimensional finite element model .2.2.S type locked titanium plate and straight titanium plate were constructed and fixed at the proximal end. The distal vertical vertical titanium plate was bent along the long axis and the maximum stress was located in and around the middle hole. However, the stress of S type titanium plate was more dispersed than that of straight titanium plate. 3. 3. 3. The three dimensional finite element model of clavicle locking titanium plate and straight titanium plate were fixed at the proximal end of the plate. The maximum stress concentration of distal axial torsion is located in and around the middle hole, and there is no obvious change in stress distribution. Conclusion: the 3D solid model of titanium alloy clavicle plate was constructed based on the original CT scan data. Good fit with bone, The model can be used to obtain the individualized plate suitable for individual by 3D printing technology. The results of finite element analysis can simulate the actual force of the plate, and the two kinds of clavicle plate are analyzed by finite element method. Under the condition of lateral bending and axial torsion, the maximum stress distribution of the 7 hole titanium plate is found to be in the center of the central hole. In the actual operation, there is a stress superposition between the broken end of the clavicle fracture and the center of the open locking hole. If the titanium plate can avoid the stress concentration, it can effectively avoid the breakage after operation, provide theoretical guidance for clinical practice, and provide a reference and technical route for the biomechanical analysis of other types of titanium plate.
【學(xué)位授予單位】：山西醫(yī)科大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：R687.3

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本文編號(hào)：1594548