颈椎前路钛网植骨钢板内固定在不同颈椎节段中的生物力学比较

Biomechanical Evaluation of Titanium Mesh with Anterior Plate Fixation in Anterior Cervical Decompression

颈椎前路钛网钢板在不同颈椎节段中的生物力学研究。取6具新鲜尸体C3～7标本,行C5、C5～6、C4～6椎体次全切除,行钛网植骨钢板内固定术。依次测量各节段的前屈、后伸、左右侧弯、左右旋转运动变化,以完整标本作对照。不同颈椎节段开槽减压椎间撑开钛网钢板内固定状态下手术节段的即刻稳定性比完整状态增加(P< 0．05)。颈椎前路椎体次全切除之后,应用颈椎前路钛网钢板内固定可明显增强颈椎的稳定性,随颈椎固定节段增加稳定性下降。

We have made a biomechanical evaluation of titanium mesh with anterior plate fixation in anterior cervical decompression. Six fresh cervical spine specimens（C3-7） of young cadavers were used in the biomeehanieal test. Subtotal vertebreetomy was performed on C5,C5-6 and C4-6. We accomplished two constructions： （1）bone graft ; （2）titanium mesh with anterior plate fixation. Then their biomeehanie stabilities were tested in all groups and compared with those of intact specimens. We found that titanium mesh with anterior plate fixation improved the stability of the unstable spine,showing a significant difference when compared with that of the intact group （P〈0. 05）. The anterior cervical interbody fusion by bone graft and the titanium mesh implantation is stabler than the intact cervical sample,and the stability decreases with the increase in number of cervical segment.