前路经枢椎体寰椎侧块螺钉固定术

目的 建立一种新的寰枢椎内固定术式，用来治疗难以实施后路内固定的病例。方法 使用纯钛制成的固定螺钉，做颈前路暴露，经枢椎针两枚螺钉分别拧人左、右寰椎侧块，达到区椎的即刻稳定。结果 １０例手术患者，平均随访１９个月，其中７例螺钉固定位置良好，寰枢椎达到稳定，死亡１例。结论 经枢椎体寰椎愉螺钉固定术是一种比较可犊的寰枢椎内固固定方法，尤其适用于难以施行后路内豁达一术的病例。

Anterior Transarticular Screw Fixation Through C2 Vertebral Body for Atlantoaxial Instability

Objective To design a new method for atlantoaxial arthrodesis Methods The usual anterior approach was used through an incision at a level just above the cricoid cartilage The anterior body of C 3 was exposed and the C 2-3 disc identified Starting 2-3 mm to the left of the exact midline and just under the inferior anterior edge of the body of C 2, a guide pin was directed to the left lateral mass of atlas and then,the titanium screw was placed Another screw was placed directly to the right lateral mass Results Of the ten patients underwent the described procedure and followed up for a mean of 19 months, seven showed good position of the screws, one patient died of respiratory insufficiency Conclusion The new method of atlantoaxial arthrodesis was found to be reliable and be especially useful in patients who were not feasible for posterior atlantoaxial internal fixation