寰枢外侧关节面错位征的临床价值  

Clinical Value of Stagger Articular Facets of Lateral Atlantoaxial Joints

作　　者：段少银[1] 黄锡恩[1] 林清池[1] 陈国能[2] 

机构地区：[1]厦门大学附属中山医院影像科,福建厦门361004 [2]厦门大学附属中山医院骨科

出　　处：《中国中医骨伤科杂志》2007年第2期6-8,共3页Chinese Journal of Traditional Medical Traumatology & Orthopedics

基　　金：厦门市科技项目(3502Z20034018)

摘　　要：目的:提高对SAFLAJ征象(SAFLAJ)的认识,评价其临床价值。方法:回顾性分析确诊为寰枢关节不全脱位患者的三维CT资料52例,讨论SAFLAJ征的影像表现及特点。CT检查体位为寰枢关节中立位及部分病例加旋转位,三维重建方法(3-D)为表面遮盖法(SSD)和容积重建法(VR)。结果:52例中立位3-D图像发现SAFLAJ征,表现为寰椎下关节面与枢椎上关节面相互错开分离并固定。23例旋转位3-D图像SAFLAJ征表现为旋转固定8例,旋转不对称15例。通过观察SAFLAJ征,诊断寰枢关节不全脱位全部正确,其中旋转性脱位37例,前脱位10例,后脱位5例,脱位程度为2mm-9mm。结论:显示SAFLAJ征能确定寰枢关节不全脱位诊断,并获得脱位分型、脱位程度,诊断准确性高。Objective：To improve the recognition of the stagger articular facets of lateral atlantoaxial joints （ SAFLAJ）, and evaluate its clinical application. Methods： 3-D imaging findings of 52 patients proven with atlantoaxial subluxation were retrospectively analyzed, and imaging manifestation and features of SAFLAJ were discussed. 52 cases were examined in neutral position, of whom 23 in additional rotary position. 3-D images were obtained by surface shade display（SSD） and volume rendering（VR）. Results：In neutral position 3--D images, all the patients were found SAFLAJ, the change is stagger and locked facts of the atlas on the axis with the anterior, posterior or rotary. Of the 23 in rotary position 3--D images, rotational fixations were shown in 8 cases and rotational asymmetry in 15. Fifty-two patients with atlantoaxial subluxation were correctly diagnosed by observing the SAFLAJ, with rotatory dislocation in 37, anterior dislocation in 10 and posterior dislocation in 5. the dislocated extend ranged from 2.0 mm to 9.0 mm. Conclusion：With the sign of SAFLAJ, the diagnosis of atlantoaxial subluxation can be ascertained, as well as the type and extent of dislocation. High diagnosis accuracy can be obtained.

关 键 词：寰枢关节 脱位 X线计算机 体层摄影术 图象处理 计算机辅助 

分 类 号：R681.5[医药卫生—骨科学]