The ahtavb can restore the height of spinal segment eff6ctiveiy and bone fusion can be reached after one year . conciusions : the aht - av8 has an ideal adjustabie ability and rationai biomechanicai stabiiity it can be used aione in spinal deficit that the segment was not severally destroyed 临床应用研究结果显示人工椎体可有效重建椎节的高度并恢复椎间夹角,患者可早期下地,术后1年70病例可达骨性融合。