PMC9937633_01
Lateral view of the fluoroscopic image showing needle insertion at the sacrococcygeal joint and the injected contrast appearing like an inverted comma
cureus-0015-00000033911-i01.jpg
PMC9937633_01_cureus-0015-00000033911-i01.jpg
FIG1
It looked like an inverted comma and was described in the literature as a "comma sign" (Figures 1-3).
Anterior-posterior fluoroscopic image of the needle and injected contrast
cureus-0015-00000033911-i02.jpg
PMC9937633_01_cureus-0015-00000033911-i02.jpg
FIG2
It looked like an inverted comma and was described in the literature as a "comma sign" (Figures 1-3).
A lateral view of the fluoroscopic image showing the needle inserted at the intra-coccygeal joint and the injected contrast
cureus-0015-00000033911-i03.jpg
PMC9937633_01_cureus-0015-00000033911-i03.jpg
FIG3
It looked like an inverted comma and was described in the literature as a "comma sign" (Figures 1-3).