PMC4904596_01
PMC4904596_02
PMC4904596_03
Fluoroscopic images of three cases. (a) and (b) show anteroposterior (AP) and lateral views, respectively, of case  1. (c) and (d) show AP and lateral views, respectively, of case  2. (e) and (f) show AP and lateral views, respectively, of case  3. Black arrowheads indicate the catheter inserted through a Tuohy needle.
PRM2016-5461989.001.jpg
PMC4904596_03_PRM2016-5461989.001.jpg
fig1
Fluoroscopic views of the operating procedures are shown in Figure 1.