Effectiveness of Ultrasonography- and Fluoroscopy-Guided Caudal Epidural Injections in the Management of Chronic Lumbar Disc Disease: A Retrospective Comparative Study

Introduction: Lumbar disc disease is one of the common causes of lower back pain caused by a change in the structure of the normal disc. Most of the time, disc disease happens as a result of aging and the normal breakdown that occurs within the disc. Caudal epidural steroid injections are the popular treatment for patients with chronic low back pain that does not respond to conservative management. Method: A retrospective survey was administered to 160 patients who had received caudal epidural injections for chronic low back pain in the past, but only 74 patients who completed the scheduled follow-ups were included in the study. They were divided into two groups based on the imaging modality used for guiding the caudal epidural steroid injections, either ultrasonography or fluoroscopy, and then assessed for improvement in pain on the Numeric Rating Scale (NRS), for functional improvement on the Oswestry Disability Index (ODI), and for satisfaction on the North American Spine Society Patient Satisfaction Scale (SSPSS). Results: Mean NRS pain scores improved significantly from baseline at 6.78 and 7.00 in the fluoroscopy and ultrasound groups, respectively, to 2.03 and 2.16 at 12 weeks post-procedure. The difference between the groups was not statistically significant (p > 0.05). The Oswestry Disability Index was completed at baseline and after 12 weeks of follow-up for both groups, and there was no significant difference between the two groups; the fluoroscopy group's mean Oswestry Disability Index scores were 52.4 at baseline and 35.6 at 12 weeks, whereas the scores for the ultrasound group were 50.3 at baseline and 37.9 at 12 weeks. Conversely, patient satisfaction as assessed using the SSPSS rose in both groups up to 12 weeks (p > 0.05). Conclusion: The ultrasound- and fluoroscopy-guided caudal epidural steroid injections proved equally effective in easing the pain, disability, and satisfaction levels of patients with chronic lower back pain.