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在"中國力學(xué)虛擬人"模型庫中選擇L4-L5基本功能單元,對新型的Maverick 型人工椎間盤假體進(jìn)行了生物力學(xué)研究.在相同的邊界條件和加載作用下比較正常組和假體植入后椎體皮質(zhì)骨、松質(zhì)骨上的應(yīng)力變化,比較L4和L5兩椎體間的相對運(yùn)動(dòng)范圍和小關(guān)節(jié)上受力變化.其結(jié)果從生物力學(xué)角度證實(shí)了Maverick型假體可以重建椎間盤高度,滿足椎體間相對運(yùn)動(dòng)的要求.但由于假體材料屬性與椎體骨組織的屬性相差很大,假體植入后會(huì)引起椎體骨應(yīng)力的改變,增加小關(guān)節(jié)的受力,因此其遠(yuǎn)期的療效還需要通過隨訪進(jìn)一步研究.

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