The stabilizing system of the spine consists of passive , active and neutral control subsystems 脊柱的稳定系统由被动系统、主动系统和神经控制系统组成。
Flexion - extension radiographs taken at the end - range of movement will capture only the function of the passive stabilizing subsystem and fail to address the active and neural control subsystems 腰椎屈伸侧位片拍摄的是腰椎活动的最后阶段,只反应了脊柱被动系统的功能,而没有反应主动系统和神经控制系统的功能。