MLS Laser Reduce Pain in Patients with Chronic Low Back Pain.

Background: The Multiwave Locked System (MLS) has been shown to reduce inflammation and enhance biostimulation.

Objectives: The aim was to investigate the effect of using MLS laser in reducing pain severity in patients with chronic back pain.

Methods: This randomized double-blind study was conducted on 30 patients (15 in each group) with chronic low back pain (LBP) who were referred to Imam Khomeini Hospital and diagnosed by a physical medicine specialist based on diagnostic criteria. The intervention group was treated with MLS multiple wave laser, performed 12 times, with patients receiving laser treatment twice a week. The control group was treated with exercise therapy. Pain intensity was evaluated using the Visual Analog Scale (VAS) before treatment and 6 weeks after treatment. Pain was analyzed before and after the intervention, both within and between groups.

Results: Of the 30 evaluated patients, the mean and standard deviation of age (P = 0.392) and gender (P = 0.666) were not statistically significant between the two groups. The VAS value before treatment in the intervention and control groups was 7.66 ± 1.11 and 7.73 ± 1.16, respectively (P = 0.794). After treatment, the VAS values in the MLS and control groups were 5.60 ± 1.35 and 7.73 ± 1.16, respectively. Statistical evaluation showed a statistically significant difference between the two groups (P = 0.001), and the total change in VAS values was significant (P = 0.001).

Conclusions: Multiwave Locked System laser can reduce the pain severity of chronic LBP, with the reduction rate in the intervention group being significantly higher than in the exercise group.