Journal of Isfahan Medical School

Journal of Isfahan Medical School

The Effects of High Intensity Nd:YAG Laser on Pain and Function in Patients with Knee Osteoarthritis

Document Type : Original Article (s)

Authors
ََAhmad Nazari 1
Azar Moezy 2
Parisa Nejati 2
Ali Mazaherinezhad 2
1 Resident, Department of Sports Medicine, School of Medicine, Iran University of Medical Sciences. Tehran, Iran
2 Associate Professor, Department of Sports Medicine, School of Medicine, Iran University of Medical Sciences. Tehran, Iran
10.22122/jims.v36i473.9315
Abstract
Background: Knee osteoarthritis (KOA) is the most common musculoskeletal disorder which often targets elderly. The aim of this study was to evaluate the effects of the high-intensity Nd:YAG laser therapy (HILT) compared to conventional physiotherapy (CPT) on pain and function in patients with knee osteoarthritis.Methods: In this randomized clinical trial study conducted in 2016-2017, sixty eligible patients with knee osteoarthritis were randomly assigned into two groups of high-intensity Nd:YAG laser therapy and conventional physiotherapy [including ultrasonography and transcutaneous electrical nerve stimulation (TENS)]. They received ten sessions of treatment. All patients were evaluated for pain intensity, range of knee flexion, functional tests, and Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire at the baseline and after the treatment. Wilcoxon and paired t tests were used to compare intragroup changes pre and post-intervention, and Mann-Whitney and independent sample t tests were used to compare between-group changes.Findings: There were significant differences in all variables (P < 0.001) between pre and post-intervention in each group. There were also significant differences in the pain (P < 0.001), and function subscale (P = 0.006) and total score (P = 0.030) of Western Ontario and McMaster Universities Osteoarthritis Index.Conclusion: The results of the study indicate that high-intensity Nd:YAG laser therapy is more effective in decreasing pain and increasing functional performance in comparison to conventional physiotherapy in patient with knee osteoarthritis.
Keywords
Osteoarthritis of knee
Nd-YAG lasers
Physiotherapy (Techniques)
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Journal of Isfahan Medical School
Volume 36, Issue 473 - Serial Number 473
March and April 2018
Pages 299-308

  • Receive Date 09 December 2017
  • Accept Date 06 April 2022