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An Investigation Into the Efficacy of Intra-Articular Ozone (O 2 –O 3 ) Injection in Patients With Knee Osteoarthritis: A Systematic Review and Meta-Analysis Publisher



Raeissadat SA1 ; Tabibian E2 ; Rayegani SM3 ; Rahimidehgolan S3 ; Babaeighazani A4
Authors
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Authors Affiliations
  1. 1. Clinical Development Research Center of Shahid Modarres Hospital, Physical Medicine and Rehabilitation Department and Research Center, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  2. 2. Radiology Department, Medical Imaging Center, Advanced Diagnostic and Interventional Radiology Research Center (ADIR), Imam Khomeini Hospital Complex, Tehran University of Medical Sciences, Tehran, Iran
  3. 3. Physical Medicine and Rehabilitation Department and Research Center, Shohada-e-Tajrish Hospital, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
  4. 4. Department of Physical Medicine and Rehabilitation, Neuromusculoskeletal Research Center, Iran University of Medical Sciences, Tehran, Iran

Source: Journal of Pain Research Published:2018


Abstract

Purpose: This study aimed to review and pool the current literature on intra-articular ozone injection in knee osteoarthritis (OA) patients. Methods: A systematic review of three big databases was performed to identify all English-language randomized clinical trials (RCTs) that evaluated the efficacy of intra-articular ozone injection vs a control injection for knee OA sufferers, using the following two measuring tools: pain VAS and Western Ontario and McMaster Universities Arthritis Index (WOMAC). Results: A total of 428 patients in five RCTs were included, from which 53% (n=225) were in the ozone group and 47% in the control (hyaluronic acid [HA], dextrose, and air injection) group (n=203). The mean age of the patients in both groups was 64 years. Females were the majority. All studies had at least 2 months of follow-up (F/U). Mean difference (MD) between the groups for VAS in the first month was –0.23 with a P-value of 0.71 (negative value was in favor of ozone), whereas this difference in the third and sixth months reached 1.04 and 1.31, respectively, favoring the control group. These data demonstrated that control injection had a more prolonged pain relief period. A similar trend was seen regarding WOMAC scores; pooled results showed that ozone was slightly better than the control injections during the first month (MD =–7.84 [P=0.15]), but it declined to MD=2.55 and 8.23 at 2-to 3-and 4-to 6-month F/U, respectively, again in favor of control injections. Also, adverse events occurred homogeneously in both ozone (6/150 cases, 4%) and control groups (7/129 cases, 5.4%; P-value=0.31). Conclusion: Based on the current meta-analysis, intra-articular ozone injection efficacy was significantly superior to placebo and slightly lower to other control injections with non-significant difference. Therefore, ozone could be recommended as an efficient non-surgical treatment, durable for at least 3–6 months, in mild or moderate knee OA management. © 2018 Raeissadat et al.
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