活动度保留对临近节段退变的作用是什么？
What Is the Effect of Motion Preservation on Adjacent Level Degeneration?
结论：TDR被证实对于临近节段椎间盘保护有积极作用。
Conclusion. TDR proved to have a beneficial effect with respect to adjacent level disc preservation.
椎间盘退变和椎管狭窄的发生与第一个临近节段的疗效有巨大的相关性。
Disc degeneration and stenosis correlated significantly with outcome at the first adjacent level.
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