超声引导下经椎间孔硬膜外注射的可行性

目的观察猪标本超声引导下腰椎经椎间孔硬膜外注射的可行性及准确性。方法取来自2只巴马小型猪的L1-6节段脊柱及椎旁部分组织,分别在双侧L1-2、L2-3、L3-4、L4-5、L5-6椎间孔完成超声引导下经椎间孔硬膜外穿刺,应用腰椎X线片和CT检测穿刺针位置;大体观察穿刺针入路和针尖位置,记录穿刺针皮肤入针点与后正中线距离、入针深度和入针角度,并进行左右对比。结果穿刺成功率95%(19/20),其中穿刺针针尖位于椎间孔下缘、腹侧、中央区和旁中央区的占80%(16/20)。成功穿刺时,左右侧穿刺针皮肤入针点与后正中线距离、入针深度、入针角度无显著性差异(|t|<1.475,P>0.05)。结论超声引导下经椎间孔硬膜外穿刺有较高准确率。

Ultrasound-guided Transforaminal Epidural Injection in Pigs

Objective To observe the feasibility and accuracy of ultrasound-guided transforaminal epidural injection.Methods Ultrasound-guided injection at L_1-2, L_2-3, L_3-4, L_4-5, L_5-6 bilaterally was performed in L_1-6 spine from two Bama miniature pigs. The position of needles was detected with X-ray and CT, and observed under anatomy. The distance from the puncturing points at skin to the posterior midline, the depths and angles of puncturing between were measured and compared bilaterally.Results The successful rate was 95% (19/20), out of which, 80% (16/20) were put the needle tips at the lower part of the intervertebral foramen, ventral side, central region or paracentral region. There was no significant difference between sides in the distances, depths or angles in 19 successful injections.Conclusion It is accurate to transforaminally puncture under ultrasound-guided.