RF-Ⅱ型椎弓根螺钉复位固定滑脱腰椎的持骨力及相关因素研究
RF-Ⅱ형추궁근라정복위고정활탈요추적지골력급상관인소연구
A study of Spondylolisthesis treated with RF-Ⅱ pedicle screw system
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