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目的 為實(shí)現(xiàn)虛擬手術(shù)環(huán)境全方位的實(shí)時(shí)交互，本文針對(duì)脊柱腰椎椎弓根螺釘內(nèi)固定手術(shù)構(gòu)建了虛擬手術(shù)訓(xùn)練系統(tǒng)。方法 通過(guò)脊柱模型的虛擬幾何建模和紋理渲染以高真實(shí)感地模擬真實(shí)虛擬手術(shù)環(huán)境，同時(shí)基于椎體骨的體素模型通過(guò)多點(diǎn)碰撞檢測(cè)算法和鉆骨力預(yù)測(cè)經(jīng)驗(yàn)?zāi)Ｐ停瑢?shí)現(xiàn)鉆骨操作的碰撞檢測(cè)及反饋力實(shí)時(shí)計(jì)算，并模擬椎弓根釘植入過(guò)程的視覺(jué)和觸覺(jué)感受。結(jié)果 該虛擬手術(shù)訓(xùn)練系統(tǒng)實(shí)現(xiàn)了虛擬視覺(jué)及虛擬力觸覺(jué)的實(shí)時(shí)交互，模擬了椎弓根釘植入操作手感。結(jié)論 虛擬手術(shù)訓(xùn)練系統(tǒng)為椎弓根螺釘內(nèi)固定手術(shù)操作提供了視覺(jué)與力觸覺(jué)模擬，實(shí)現(xiàn)了一種精確、安全、靈活的訓(xùn)練方式。

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