下颈椎不稳症是位于颈2～3椎节以下的颈椎椎节不稳定，本病可视为颈椎退变的一个过程，在临床上常见，且其病情相差甚大。下颈椎不稳症的临床表现差别较大，从轻度的颈部不适到根性放射痛，甚至瘫痪等。此主要取决于颈椎不稳的程度、椎管矢状径大小的差异、受累椎节的高低、硬膜囊的矢状径及发病速度快慢等的不同。
方法对下颈椎不稳症21例均采用正侧双斜位及摄X线动态颈椎侧位过曲过伸片。
Methods X-ray posteroanterior, lateral, double-oblique and dynamic lateral overflexional and overextensive views were performed on 21 patients.
目的：探讨下颈椎不稳定屈曲骨折并颈髓损伤后的手术治疗及内固定选择的适应症。
Objective: To explore the choice of operative treatment and internal fixation in cervical vertebra instability bending fracture accompanied by cervical spinal cord injuries.
目的探讨下颈椎不稳与颈椎后纵韧带骨化症(OPLL)早期发病的关系。
Objective To evaluate the effect of lower cervical instability on the onset of cervical ossification of the posterior longitudinal ligament (OPLL).
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