Conclusions.The TFAS allowed considerable motion in all directions tested, with ROM being less than the intact in flexion and lateral bending, and greater than the intact in axial rotation.

• 结论：TFAS固定允许在所有测试方向的较大的活动，与正常状态相比关节活动度在前屈和侧弯时较小，在轴向旋转时较大。