【摘要】：目的通過(guò)有限元分析比較正常人體下頸椎、頸前路椎間盤(pán)切除植骨融合術(shù)(ACDF)后及頸前路椎體次全切植骨融合術(shù)(ACCF)后活動(dòng)度(ROM)和相鄰節(jié)段椎間盤(pán)及關(guān)節(jié)突關(guān)節(jié)的應(yīng)力變化。方法建立正常人體下頸椎三維有限元模型。通過(guò)與已發(fā)表的關(guān)于頸椎ROM的文獻(xiàn)相對(duì)比,驗(yàn)證該模型的有效性。模型驗(yàn)證成功后,建立下頸椎A(chǔ)CDF、ACCF模型,并對(duì)比正常頸椎、ACDF及ACCF術(shù)后ROM和相鄰節(jié)段椎間盤(pán)及關(guān)節(jié)突關(guān)節(jié)的應(yīng)力變化。結(jié)果所建立的下頸椎三維有限元模型在各個(gè)方向上的ROM與已發(fā)表研究所測(cè)得的ROM數(shù)值基本吻合,驗(yàn)證了模型的有效性。ACDF和ACCF術(shù)后總體ROM和融合節(jié)段ROM顯著低于正常下頸椎。ACDF及ACCF術(shù)后相鄰節(jié)段各個(gè)方向的ROM顯著高于正常下頸椎。ACDF、ACCF術(shù)后相鄰節(jié)段椎間盤(pán)及關(guān)節(jié)突關(guān)節(jié)應(yīng)力峰值在各個(gè)運(yùn)動(dòng)方向上高于正常下頸椎組。結(jié)論頸椎融合術(shù)后總體ROM減少、相鄰節(jié)段ROM增加,并且相鄰節(jié)段椎間盤(pán)及關(guān)節(jié)突關(guān)節(jié)應(yīng)力峰值升高,顯著改變了頸椎的正常生理特性。
[Abstract]:Objective to compare the changes of (ROM), the stress of adjacent intervertebral disc and articular facet joints in normal human lower cervical vertebrae, anterior cervical intervertebral discectomy, anterior cervical intervertebral disc resection and fusion with (ACDF) and (ACCF) after subtotal cervical vertebrae fusion by finite element analysis. Methods the three-dimensional finite element model of lower cervical vertebra was established. The validity of the model was verified by comparing it with the published literature on cervical ROM. After the model was verified successfully, the ACDF,ACCF model of lower cervical vertebra was established, and the stress changes of ROM and adjacent intervertebral disc and articular facet joints after normal cervical spine ACDF and ACCF were compared. Results the ROM of the three dimensional finite element model of the lower cervical vertebrae in all directions is in good agreement with the published ROM. The validity of the model. ACDF and ACCF total ROM and fusion segment ROM were significantly lower than those of normal lower cervical vertebra. ACDF and ROM of adjacent segments after ACCF operation were significantly higher than those of adjacent segments of intervertebral disc and articular process after normal lower cervical vertebra. ACDF and ACCF. The peak value of joint stress in each movement direction was higher than that in normal lower cervical vertebra group. Conclusion after cervical fusion, the total ROM decreased, the ROM of adjacent segments increased, and the peak stress of adjacent intervertebral disc and articular facet increased, which significantly changed the normal physiological characteristics of cervical vertebrae.
【作者單位】： 西安交通大學(xué)第二附屬醫(yī)院脊柱外科;
【基金】：國(guó)家自然科學(xué)基金(81571209) 教育部博士點(diǎn)基金項(xiàng)目(20120201130009)~~
【分類號(hào)】：R687.3

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