寰枢关节脱位是否影响下颈椎？
Does atlantoaxial dislocation influence the subaxial cervical spine?
机构信息
Orthopaedic Department, Peking University Third Hospital, 49 North Garden Street, Haidian District, Beijing 100191, China.
出版信息
Eur Spine J. 2013 Jul;22(7):1603-7. doi: 10.1007/s00586-013-2742-4. Epub 2013 Apr 23.
INTRODUCTION
Previous studies have reported that the alignments of the occipital-cervical and subaxial spine were closely interrelated in asymptomatic individuals; however, none have focused on a population with atlantoaxial dislocation.
MATERIAL AND METHODS
From 2007 to 2011, 298 patients with atlantoaxial dislocation and atlas occipitalization were studied. Angles formed between Occiput-C2 and C2-C7 were measured. The relationship between the alignment of the occipital-cervical junction and the subaxial cervical spine was evaluated.
RESULTS
The range of values for the angles measured was as followed: the Occiput-C2 angles were -35.2° to 44.8°, and the C2-C7 angles were -17.4° to 77.8°. Statistically significant negative correlations were observed between the Occiput-C2 and C2-C7 angles.
CONCLUSION
Anterior dislocations of the atlas are associated with diminished lordosis or even kyphosis of the occipital-cervical junction, and result in compensatory hyperlordosis of the subaxial cervical spine, collectively presenting as a "swan neck" deformity. Atlantoaxial dislocation may influence the global cervical alignment.
简介
既往研究报道，在无症状人群中，枕颈和下颈椎的排列密切相关；然而，尚无研究关注寰枢椎脱位人群。
材料与方法
2007 年至 2011 年，研究了 298 例寰枢椎脱位和寰椎枕化患者。测量枕骨-寰椎和寰椎-颈 2（C2）-颈 7（C7）之间形成的角度。评估枕颈交界处与下颈椎的排列关系。
结果
测量角度的范围如下：枕骨-寰椎角为-35.2°至 44.8°，寰椎-颈 2（C2）-颈 7（C7）角为-17.4°至 77.8°。枕骨-寰椎角与寰椎-颈 2（C2）-颈 7（C7）角之间存在显著的负相关。
结论
寰椎前脱位与枕颈交界处前凸减少甚至后凸有关，导致下颈椎代偿性过度前凸，整体表现为“天鹅颈”畸形。寰枢椎脱位可能影响颈椎的整体排列。
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