论文部分内容阅读
目的 总结国人齿突的形态特点, 观察经颈前路单枚AO 中空螺钉治疗齿突骨折的效果.方法 测量60 具枢椎干燥骨齿突的有关解剖径线及其中10 具标本齿突基底部的骨皮质厚度.在临床上经颈前路应用单枚AO中空螺钉治疗13 例齿突新鲜骨折.结果 国人齿突基底部的冠状外径为(8-9±1-0) M M ,两侧骨皮质总厚度约为3-0 M M ,故绝大部分国人的齿突不适合用两枚螺钉固定.采用单枚AO中空螺钉固定治疗齿突骨折13 例,经平均13 个月的随访,全部获得骨性愈合,平均愈合时间为3-5 个月.结论 绝大部分国人齿突不适合用两枚直径3-5 M M 的AO 中空螺钉固定.经颈前路单枚AO中空螺钉固定同样可以获得良好的治疗效果“,”Objective To observe the suitability of an AO cannulated screw fixation system for dens fracture on the basis of dens morphology in Chinese population Methods The morphology of 60 dry axis specimens were observed and dens cortical thickness was measured in 10 specimens In clinical practice,only a single AO cannulated screw was used to treat thirteen patients with fresh odontoid fracture through anterior cervical approach Results The coronary caliber of dens at its base in Chinese population were (8 9±1 0) mm,with bicortical thickness of approximately 3 0 mm;therefore the majority of dens are not suitable for two 3 5 mm screws fixation With an average 13 months follow up,dens fractures in all cases healed completely in 3 5 months Conclusion The dens of the majority of the Chinese patients are not suitable for two 3 5 mm screws direct fixation One cannulated screw fixation is good enough to provide excellent fixation of odontoid fracture