Ultrasound-Guided versus Blind Coccygeal Corticosteroid Injections for Chronic Coccydynia: A Randomized, Clinical Trial

Document Type : RESEARCH PAPER

Authors

1 Neuromusculoskeletal Research Center, Department of Physical Medicine and Rehabilitation, School of Medicine, Iran University of Medical Sciences, Tehran, Iran.

2 Specialist of Physical Medicine and Rehabilitation, Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran.

3 Neuromusculoskeletal Research Center, Department of Physical Medicine and Rehabilitation, School of Medicine, Iran University of Medical Sciences, Tehran, Iran

4 Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran

Abstract

Objectives: Corticosteroid injection is frequently used for chronic coccydynia management. Ultrasonography can be used to improve the accuracy of the injection. This study aims to assess the clinical outcome of ultrasound-guided compared to blind coccygeal injection in chronic coccydynia.
Methods: Thirty patients with chronic coccydynia were randomized into two groups and received a coccygeal corticosteroid injection in maximum tenderness point: 15 patients with and 15patients without ultrasound guidance. The patient's pain was evaluated with the visual analog scale (VAS) at 1, 4, 8, and 24 weeks post-injection. Also, the Dallas pain scale was assessed before, four, and eight weeks after treatment. The patients' quality of life was evaluated before and four weeks after the intervention by the SF-36 questionnaire.
Results: The VAS score decreased significantly 24 weeks after the intervention in both ultrasound-guided and blinded groups (P < .001), without any significant difference between the groups (P = .964). Similarly, the Dallas pain scale had a significant decrease at eight weeks after intervention in both groups (P < .001) with no significant difference between the groups (P = .972). Although there was a significant improvement in the patients' quality of life in each group 8 weeks after the intervention, it was not significantly different between the two groups. None of the treatment groups had any adverse effects associated with the injection.
Conclusion: There were no significant differences in the clinical outcome of coccygeal ultrasound-guided vs. blind steroid injection for chronic coccydynia.

Keywords



Articles in Press, Accepted Manuscript
Available Online from 05 April 2022
  • Receive Date: 27 June 2021
  • Revise Date: 08 March 2022
  • Accept Date: 09 March 2022
  • First Publish Date: 05 April 2022