目的：观察颈椎椎体间融合器(BAK)在颈椎前路减压融合术中的临床疗效。
Objective: To observe the effects of BAK in anterior decompress and the cervical inter-body fusion.
目的：观察比较两种颈椎椎体间融合器经椎间隙减压融合术后的影像学表现及临床疗效。
Objective: To observe and compare the clinical and radiological results of two kinds of interbody fusion cages after anterior decompression through cervical disc space.
目的研制一种新型镍钛形状记忆合金腰椎椎体间融合器，通过动物实验了解其生物力学和组织学性能。
Objective to design a new type of posterior lumbar interbody fusion cage made of NiTi shape-memory alloy and to evaluate its histological and biomechanical behavior through animal study.
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