Caudal Epidural Steroid Injection Ultrasound Guided in LDP

"A. Ultrasound-Guided CESI (Group 1) All the injection procedures were performed as an outpatient clinic setting. We used Acuson P300 (Siemens, Italy) with a linear transducer at 6 to 12 MHz as the US instrument, another curved transducer at 2-5 MHz was available for obese patients.~B. Fluoroscopy-Guided CESI (Group 2) All the injection procedures were performed in a specialized room with a FL device in the radiology department. We used a FL device GS 1004 with ALLURA XPER FD 20 system (Philips, Holland) with X-ray tube housing assembly, X-ray tube, beam limiting device and image receptor"