Objective. Comparison of segmental ROM at the index level and the cranial and caudal adjacent levels and of global lumbar spine ROM after monosegmental fusion and posterior dynamic stabilization.

• 目的：对单节段融合以及后路动力固定后，病变节段、头侧和尾侧相邻节段以及整个腰椎的活动度进行比较。