Summary of Background Data. TDR has been shown to preserve motion and possibly prevent abnormal loading at the adjacent level.
背景资料概述：已经证实，TDR能保存活动度并可能能防止相邻节段的异常负荷。
Summary and Background Data. Dynamic cervical plates allow graft loading which may enhance fusion.
背景资料概述：应用颈椎动力钢板可使植骨块承担部分负荷，从而促进融合。
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