【摘要】：[目的]用有限元方法研究人工髖關(guān)節(jié)置換術(shù)后Vancouver B1型股骨假體周?chē)钦鄄煌瑑?nèi)固定方式的穩(wěn)定性及生物力學(xué)情況。[方法]模擬人工髖關(guān)節(jié)置換術(shù)后Vancouver B1型股骨假體周?chē)钦?并模擬不同方式的鎖定鈦板螺釘內(nèi)固定術(shù),模擬部分負(fù)重及完全負(fù)重情況對(duì)裝配體施加載荷,并進(jìn)行組間比較。[結(jié)果]隨著鈦板及螺釘數(shù)量增加,骨折端位移減小,內(nèi)固定穩(wěn)定性增加,鈦板上分布的Von Mises應(yīng)力峰值逐漸減小,單八孔鈦板、單十孔鈦板及雙八孔鈦板固定組間比較差異有統(tǒng)計(jì)學(xué)意義,但雙十孔鈦板與雙八孔鈦板固定組間比較差異無(wú)統(tǒng)計(jì)學(xué)意義;同時(shí),假體上分布的Von Mises應(yīng)力峰值逐漸增大,但各組間比較均差異無(wú)統(tǒng)計(jì)學(xué)意義。[結(jié)論]對(duì)于Vancouver B1型股骨假體周?chē)钦?若采用鎖定鈦板螺釘內(nèi)固定方式進(jìn)行治療,雙重鈦板可比單一鈦板提供更高的穩(wěn)定性,同時(shí)使得鈦板上分布的應(yīng)力峰值減低,但過(guò)長(zhǎng)的雙重鈦板(雙十孔)并無(wú)必要。
[Abstract]:[objective] to study the stability and biomechanics of different internal fixation methods for periprosthetic fracture of Vancouver B1 femur after hip arthroplasty by finite element method. [methods] to simulate the periprosthetic fracture of Vancouver B1 femur after artificial hip arthroplasty, and to simulate the internal fixation of different locking titanium plate screws, and to simulate the loading of partial and complete load on the assembly, and to compare the results among groups. [results] with the increase of the number of titanium plates and screws, the displacement of the fracture end decreased, the stability of internal fixation increased, the peak value of Von Mises stress distributed on the titanium plate gradually decreased, and the titanium plate with single and eight holes decreased. There was significant difference between single and double eight-hole titanium plate fixation groups, but there was no significant difference between double-ten-hole titanium plate and double-eight-hole titanium plate fixation group. At the same time, the peak value of Von Mises stress on the prosthesis gradually increased, but there was no significant difference among the groups. [conclusion] for the periprosthetic fracture of Vancouver B1 femur, if the locking titanium plate screw is used to treat the fracture, the double titanium plate can provide higher stability than the single titanium plate, and the peak stress distribution on the titanium plate can be reduced at the same time. But long double titanium plate (double ten holes) is not necessary.
【作者單位】： 中國(guó)石油天然氣集團(tuán)公司中心醫(yī)院骨科;中國(guó)石油天然氣集團(tuán)公司中心醫(yī)院介入科;
【分類(lèi)號(hào)】：R687

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