聚醚醚酮融合器及椎弓根固定系统治疗腰椎退行性病变疗效观察
취미미동융합기급추궁근고정계통치료요추퇴행성병변료효관찰
Poly ether ether ketone cage combined with pedicle screw fixation system to treat degenerative disc disease
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