【摘要】 目的　比较前路椎间植骨和植入新型纯钛融合器后颈椎的生物力学强度。方法　取 1 2具新鲜成年男性颈椎标本 ,处理成所需试样 ,分别进行前屈、后伸、左 /右侧弯、左 /右扭转和轴向压缩的测试 ,计算位移 /载荷均值并绘图比较。结果　单纯椎间植骨的稳定性最差 ,而融合器植入则较完整颈椎试样稳定。结论　颈椎纯钛融合器是前路手术中椎间固定融合的可靠手段 ,尤其适用于多节段病变的病例。更多还原

【Abstract】 Objective To compare the biomechanical stiffness of a standard method of anterior cervical interbody fusion using bone graft with the same procedure using a new titanium threaded fusion cage. Methods In vitro biomechanical testing was performed on twelve cervical human spines. They were subjected to flexion-extension, bilateral bend, axial torque and axial compression while displacement was measured. Stiffness was calculated from load displacement mean value for each construct under each load pattern. Results The anterior cervical interbody fusion by bone graft alone was the least stable construct of all modes tested,and the titanium threaded fusion cage implantation is stabiler than the intact cervical sample. Conclusions Titanium threaded fusion cage can be used in anterior intervertebral fusion, especially in the case of multi-segmental degenerative lesion.更多还原