The clinical efficacy of ozone combined with steroid in the treatment of discogenic low back pain: a randomized, double-blinded clinical study.

Objective: This randomized double-blinded clinical study is to investigate the clinical efficacy of per-paravertebral disk ozone injection combined with steroids in the treatment of patients with chronic discogenic low back pain (CDLBP).

Methods: Group A ( = 60) received a per-paravertebral injection of a steroid mixture of 10 mL with pure oxygen 20 mL, while group B ( = 60) received a per-paravertebral injection of a steroid mixture of 10 mL combined with ozone 20 mL (30 μg/mL). Injections were administered once a week for 3 weeks, with a follow-up of 6 months. Clinical outcomes were assessed at week 1, month 3, and month 6 with the help of Visual Analog Scale (VAS) scores and Macnab efficacy evaluation.

Results: The VAS score of both group A (1.65 vs. 6.87,  = 0.000) and group B (1.25 vs. 6.85,  = 0.000) at week 1 was significantly reduced compared to baseline. The effect was sustained at the 3- and 6-month follow-up periods ( < 0.05). Group B had significantly lower VAS scores at month 3 (1.53 vs. 3.82,  = 0.000) and month 6 (2.80 vs. 5.05,  = 0.000) compared to group A, respectively. Based on Macnab criteria, 95 and 96.7% of patients in groups A and B had good rates "excellent plus good" at week 1, respectively. Good rates were significantly higher in group B at month 3 (91.7 vs. 78.3%,  = 0.041) and month 6 (85.0 vs. 68.3%,  = 0.031) compared to group A, respectively. No serious adverse events were noted in both groups.

Conclusion: Per-paravertebral injection of steroid and ozone combination resulted in better relief of CDLBP compared to pure oxygen plus steroid.

Clinical Trial Registration: ChiCTR2100044434 https://www.chictr.org.cn/showproj.html?proj=121571.