寰椎椎弓的解剖学测量及其临床意义

Anatomical measurement of vertebral arch of atlas and its clinical significance

目的 :为临床行椎弓切除减压术提供解剖学依据。方法 :对 10 3例寰椎前、后弓进行了解剖学观测。结果 :前结节与横突孔间距 :左 :2 4 .83± 3.4 6 0mm ,右 :2 5 .4 2± 3.346mm ;后弓 :外侧半距 :左 :19.6 0± 3.5 81mm ,右 19.35± 3.135mm ;内侧半距 :左 :11.5 7± 2 .997mm ,右 11.4 2±2 .6 34mm。结论 :前路手术显露前弓范围在 2 1～ 2 8mm内 ,但不能切除前弓。后路手术显露后弓范围在 15～ 2 3mm内 ,切除后弓范围在 10～ 11mm内。

Objective:To provide anatomical basis for excising vertebral arch to reduce pressure.Methods:The anterior and posterior arch of atlas were measured in 103 atlas.Results:The left was 24.83±3.460mm and the right was 25.42±3.346mm between anterior tubercle and transverse foramen.the left was 19.60±3.581mm and the right was 19.35±3.135mm of the outside semi dianmeter of posterior arch,the left was 11.57±2.997mm and the right was 11.42±2.634mm of the inside semi dianmeter of posterior arch.Conclusion:To expose range for the anterior arch within 21～28mm,the posterior arch within 15～23mm and to excise it within 10～11mm.