06/19/2025
https://www.facebook.com/share/p/155D9EACKp/
𝐓𝐡𝐞 𝐞𝐟𝐟𝐞𝐜𝐭 𝐨𝐟 𝟑𝟎𝟎 𝐦𝐖, 𝟖𝟑𝟎 𝐧𝐦 𝐥𝐚𝐬𝐞𝐫 𝐨𝐧 𝐜𝐡𝐫𝐨𝐧𝐢𝐜 𝐧𝐞𝐜𝐤 𝐩𝐚𝐢𝐧: 𝐀 𝐝𝐨𝐮𝐛𝐥𝐞-𝐛𝐥𝐢𝐧𝐝, 𝐫𝐚𝐧𝐝𝐨𝐦𝐢𝐳𝐞𝐝, 𝐩𝐥𝐚𝐜𝐞𝐛𝐨-𝐜𝐨𝐧𝐭𝐫𝐨𝐥𝐥𝐞𝐝 𝐬𝐭𝐮𝐝𝐲
Chow, et.al
A randomized, double-blind, placebo-controlled study of low-level laser therapy (LLLT) in 90 subjects with chronic neck pain was conducted with the aim of determining the efficacy of 300 mW, 830 nm laser in the management of chronic neck pain. Subjects were randomized to receive a course of 14 treatments over 7 weeks with either active or sham laser to tender areas in the neck. The primary outcome measure was change in a 10 cm Visual Analogue Scale (VAS) for pain. Secondary outcome measures included Short-Form 36 Quality-of-Life questionnaire (SF-36), Northwick Park Neck Pain Questionnaire (NPNQ), Neck Pain and Disability Scale (NPAD), the McGill Pain Questionnaire (MPQ) and Self-Assessed Improvement (SAI) in pain measured by VAS. Measurements were taken at baseline, at the end of 7 weeks’ treatment and 12 weeks from baseline. The mean VAS pain scores improved by 2.7 in the treated group and worsened by 0.3 in the control group (difference 3.0, 95% CI 3.8–2.1). Significant improvements were seen in the active group compared to placebo for SF-36-Physical Score (SF36 PCS), NPNQ, NPAD, MPQVAS and SAI. The results of the SF-36 – Mental Score (SF36 MCS) and other MPQ component scores (afferent and sensory) did not differ significantly between the two groups. Low-level laser therapy (LLLT), at the parameters used in this study, was efficacious in providing pain relief for patients with chronic neck pain over a period of 3 months.
https://www.sciencedirect.com/science/article/abs/pii/S0304395906002880