Background: Low back pain (LBP) is mostly induced by disc herniation (DH) or degeneration
and has a burden upon social activity and economical aspects of life. An abundance of medical
and surgical interventions have evolved to resolve this problem, but one of the newly introduced
techniques, which is the minimally invasive, low cost ozone-oxygen mixture (O3
-O2
) intradiscal
injection, offers a rapid onset amelioration of symptoms with a sustained duration of pain relief.
Objective: We aim to evaluate the quality of pain alleviation using 2 different doses of intradiscal
injections of O3
-O2
mixture.
Study Design: A prospectively randomized, single-blind study.
Setting: Pain clinic, anesthesia, intensive care, and pain department in Assiut University Hospitals.
Methods: Sixty patients with symptomatizing single lumbar DH were subjected to O3
-O2
intradiscal injection and randomly allocated into one of 2 groups; group A: received 10 mL, 40 µg/
mL of O3
-O2
and group B: received 10 mL, 30 µg/mL of O3
-O2
. Pain score and functional ability of
the patients using the visual analog scale (VAS) and Oswestry Disability Index (ODI) were evaluated
after 1, 6, and 12 months and compared to the basal values. Patient satisfaction and reduction of
DH were evaluated after the sixth month.
Results: There were no significant differences between the 2 groups regarding the clinical
outcome; however both the ODI and VAS evaluations showed highly significant improvement
(decreased) (P < 0.01) after injection and during the entire follow-up period. There were highly
significant negative correlations between the DH reduction percentage and both the VAS and ODI
scores after 6 months in both of the groups.
Limitations: This study was limited by a small sample size; it was also an active control trial,
which may explain the insignificant difference in between the groups, in addition to being a singleblind trial.
Conclusion: Intradiscal injection of O3
-O2
mixture is a very valuable maneuver in the reduction
of DH size and improvement of pain quality, with either ozone concentrations of 40 µg/mL or 30
µg/mL.
Key words: Low back pain, ozone, disc herniation