Between L3 and S1, the total range of motion accounted for by the L4/5 proximal adjacent level was 59% in 1-level fusions, 38% in 1-level TDR, and 29% in controls.

• 在L3和S1之间，L4/5近侧相邻节段分配的总的活动范围，在融合者1个节段为59%25，TDR者1个节段位38%25，而正常对照者为29%25。