单纯性环枢关节半脱位的影像学诊断  

The Imaging Diagnosis of the Simple Atlantoaxial Subluxation

作　　者：李晓莉 史继学 王颖 王炳杰 

机构地区：[1]陕西省渭南市公安局司法鉴定中心,714000 [2]陕西省澄城县公安局司法鉴定中心,715200 [3]陕西省渭南市中心医院CT室放射科,714000

出　　处：《现代医用影像学》2013年第3期188-189,共2页Modern Medical Imageology

摘　　要：目的:探讨单纯性环枢关节半脱位的发病机制及影像诊断。材料与方法:对15例单纯性环枢关节半脱位病例的临床及X线及CT表现作回顾性分析。结果:侧位X线片上齿前间距(AADI)增宽(成人>3mm,儿童>4mm)或咽后壁肿胀。结论:单纯性环枢关节前脱位最常见。伴有或不伴有损伤到齿突横韧带的单独撕裂都可引起环枢关节的破裂。侧位环齿前间距(AADI)测量是诊断孤立性环枢关节前-后脱位最有效和最简便的方法。在自动复位病例中,咽后壁肿胀可是唯一的X线征象。Purpose： To investigate the occurring mechanism and imaging diagnosis of the simple atlantoaxial sublux- ation. Materials and Methods： The clinical and roentgen findings of 15 simple atlantoaxial subluxation were reviewed retro- spectively. Results： The diagnosis is usually made on the lateral plain radiograph by a widened AADI （Adult 〉 3mm, Chi- dren 〉 5mm）or retropharygeal swelling. Conclusion： The simple anterior atlantoaxial subluxatiou is the most common. Isola- ted tearing of the transverse atlantal ligament（TAL）with or without trauma to the dens causes disruption of the atlantodental ar- ticulation. AADI measures on the lateral plain radiograph are the most effective and simple methods for diagnosis atlantoaxial anter-poster dislocation. In cases of spontaneous reduction, retropharyngeal swelling may be the only radiographic clue.

关 键 词：环枢关节半脱位 环齿前间距 

分 类 号：R684.7[医药卫生—骨科学]