比较两种前段膨胀椎间融合器在椎间盘镜下治疗腰椎不稳症的生物力学特点
비교량충전단팽창추간융합기재추간반경하치료요추불은증적생물역학특점
Comparative study of biomechanical characteristics of two kinds of forepart-expansible cages for treating lumbar instability with microendoscopic discectomy
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