Effectiveness and Potential Benefits of the Use of Laser Light Therapy in Musculoskeletal Rehabilitation Programs for Knee Osteoarthritis: A Narrative Review

<jats:p>Background/Objectives: The aim of this review is to present the current possibilities for using low-level laser therapy (LLLT) and high-intensity laser therapy (HILT) in musculoskeletal rehabilitation programs for knee osteoarthritis (KOA). Methods: A narrative review of the scientific literature published in the following databases was conducted: PubMed, ScienceDirect, Google Scholar, and ResearchGate. Scientific articles containing information regarding the application and efficacy of laser therapy (LLLT and/or HILT) for musculoskeletal rehabilitation in KOA were searched for. This review included observational studies, randomized controlled trials, systematic reviews, and meta-analyses published from January 2000 to June 2026. Results: Data were found indicating a high degree of disability due to degenerative musculoskeletal conditions. This requires the optimization of osteoarthritis management strategies. Evidence of varying levels of significance was identified regarding the benefits of LLLT and/or HILT in reducing osteoarthritis symptoms. However, at this stage, no firm recommendations have been made regarding the inclusion of LLLT and/or HILT in musculoskeletal rehabilitation programs. Conclusions: The use of LLLT and/or HILT therapeutic lasers in musculoskeletal rehabilitation programs may have a positive effect on osteoarthritis by improving tissue trophism and pain reduction, as well as improving range of motion and functional activity, and may also help to reduce the use of pharmacological agents. However, there is no conclusive evidence, and no strong recommendations were found for the inclusion of LLLT and/or HILT in osteoarthritis management programs. This necessitates future high-quality scientific studies with standardized protocols for laser therapy.</jats:p>