Rahimzadeh P, et al. - Researchers compared percutaneous intradiscal ozone injection vs laser disc decompression among patients with back pain radiating to lower limb due to lumbar intervertebral disc herniation. They divided 40 such patients randomly into two equal groups: The Laser Disc Decompression Group (LDG; n=20; patients were exposed to 1500 J of laser irradiation into the disc center) and the Ozone Injection Group (OZG;n=20; 6 mL of ozone 30 μg/mL was injected into the center of the disc). Intradiscal ozone injection could be an effective and cost-effective method for treatment of patients with discogenic back pain. Outcomes suggest that for treatment of patients with discogenic back pain, intradiscal ozone injection could be an effective and cost-effective method.