scholarly journals Efficacy of Acupoints Dual-Frequency Low-Level Laser Therapy on Knee Osteoarthritis

2020 ◽  
Vol 2020 ◽  
pp. 1-7
Author(s):  
Fang-Yin Liao ◽  
Chien-Lin Lin ◽  
Sui-Foon Lo ◽  
Chun-Ching Chang ◽  
Wen-Yen Liao ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Laser Therapy ◽  
Low Level Laser Therapy ◽  
Dual Frequency ◽  
Low Level ◽  
Knee Oa ◽  
Lequesne Index ◽  
Low Level Laser ◽  
Level Laser ◽  
Laser Apparatus

Background. Knee osteoarthritis (OA) presented with knee pain and limitation of mobility is common, and it may become a chronic problem resulting in major loss of function, with related impaired activity of daily living. Current traditional therapy for knee OA includes pharmacological treatment and physiotherapy, but the efficacies are limited. An alternative noninvasive treatment low-level laser therapy (LLLT) applied to acupoints is still contradictory and the efficacy needs to be assessed. Methods and Materials. We conduct the randomized double-blind control study to investigate the efficacy of a dual-frequency LLLT (combines red light (780 nm) and near-infrared light (830 nm)) in patients suffering knee OA. Participates were randomly assigned into active laser therapy (ALT) and placebo laser therapy (PLT) groups. Subjects in the ALT group were separately treated by laser apparatus at the three acupoints (SP9, SP10, and EX-LE2) on their knee joints under continuous radiation for 15 min at the maximum intensity, three times per week for four weeks. The PLT group used laser apparatus of the same model according to similar procedures without laser light emission. Outcome Measurements including visual analog scale (VAS), pain pressure threshold (PPT), and Lequesne index were used. Results. A total of 30 subjects with two-sided knee OA in both groups completed the experiment. Statistically significant decreases were observed in the Lequesne index (5.27 ± 3.26 vs. 10.83 ± 3.83), conscious VAS 4 weeks after treatment (moving: 2.87 ± 1.13 vs. 5.67 ± 1.72; resting: 0.33 ± 0.62 vs. 2.67 ± 1.29), and the increase was noted in PPT (21.23 ± 1.82 kg vs. 13.02 ± 1.46 kg) in the ALT group compared with the PLT group. Conclusion. It appears that the knee OA pain and disability can be decreased after a dual-frequency LLLT applied to acupoints (SP9, SP10, and EX-LE2). The clinical efficacy of LLLT is highly related to the therapeutic settings of the laser apparatus; hence, more clinical trials with diffident parameter settings are needed to be further clarified.

scholarly journals Electromyography changes in assessment of functional status of muscles in subjects with knee-osteoarthritis undergoing low level laser therapy

Biomedicine ◽  
2021 ◽  
Vol 41 (1) ◽  
pp. 82-87
Author(s):  
M Arun Kumar ◽  
D Venkatesh ◽  
Savita Ravindra
Keyword(s):  
Knee Osteoarthritis ◽  
Laser Therapy ◽  
Muscle Performance ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Knee Oa ◽  
Low Level Laser ◽  
Level Laser ◽  
Significant Difference ◽  
Before And After

Introduction and Aim: Knee Osteoarthritis (KOA) is a common degenerative joint disease which is one of the leading causes of disability in elderly people. Electromyography (EMG) is an electrophysiological method in evaluating skeletal muscle activity. Low-level laser (light) therapy (LLLT) is a modality of treatment used in several conditions required to suppress the pain, inflammation, stimulation of healing and restoration of function. Surface EMG parameters were studied before and after the low level laser therapy in subjects with knee osteoarthritis.  Materials and Methods: Subjects with knee OA participated in the study. Low level laser therapy (LLLT) was administered using a laser device with probe giving maximum power output of 10 mw with a wavelength of 810 nm. Surface electromyography (sEMG) of quadriceps muscles was recorded in all the study participants before and after the therapy. The parameters were statistically compared.  Results: There was a statistically significant difference between the maximum contraction and duration of contraction before and after the laser intervention in all the muscles.  Conclusion: It can be concluded that the muscle performance increased in the subjects with knee OA after the LLLT.

Ultrasound plus low-level laser therapy for knee osteoarthritis rehabilitation: a randomized, placebo-controlled trial

2018 ◽  
Vol 38 (5) ◽  
pp. 785-793 ◽  
Author(s):  
Fernanda Rossi Paolillo ◽  
Alessandra Rossi Paolillo ◽  
Jessica Patrícia João ◽  
Daniele Frascá ◽  
Marcelo Duchêne ◽  
...  
Keyword(s):  
Knee Osteoarthritis ◽  
Laser Therapy ◽  
Controlled Trial ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser

scholarly journals SHORT-TERM EFFICACY OF LOW-LEVEL LASER THERAPY IN PATIENTS WITH KNEE OSTEOARTHRITIS: A RANDOMIZED PLACEBO-CONTROLLED, DOUBLE-BLIND CLINICAL TRIAL

2011 ◽  
Vol 46 (5) ◽  
pp. 526-533 ◽  
Author(s):  
Vanessa Ovanessian Fukuda ◽  
Thiago Yukio Fukuda ◽  
Márcio Guimarães ◽  
Silvia Shiwa ◽  
Bianca Del Cor de Lima ◽  
...  
Keyword(s):  
Clinical Trial ◽  
Knee Osteoarthritis ◽  
Laser Therapy ◽  
Low Level Laser Therapy ◽  
Short Term ◽  
Double Blind ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Double Blind Clinical Trial

Effect of low-level laser therapy in patients with chronic knee osteoarthritis: a single-blinded randomized clinical study

2013 ◽  
Vol 29 (2) ◽  
pp. 749-755 ◽  
Author(s):  
Ahmad Alghadir ◽  
Mohammed Taher Ahmed Omar ◽  
Abeer Bashier Al-Askar ◽  
Naser Khwietm Al-Muteri
Keyword(s):  
Clinical Study ◽  
Knee Osteoarthritis ◽  
Laser Therapy ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Randomized Clinical Study ◽  
Level Laser

scholarly journals Effectiveness of Low-Level Laser Therapy Associated with Strength Training in Knee Osteoarthritis: Protocol for a Randomized Placebo-Controlled Trial

2021 ◽  
Vol 4 (1) ◽  
pp. 19
Author(s):  
Martin Bjørn Stausholm ◽  
Ingvill Fjell Naterstad ◽  
Christian Couppé ◽  
Kjartan Vibe Fersum ◽  
Ernesto Cesar Pinto Leal-Junior ◽  
...  
Keyword(s):  
Global Health ◽  
Knee Osteoarthritis ◽  
Strength Training ◽  
Laser Therapy ◽  
Controlled Trial ◽  
Low Level Laser Therapy ◽  
Low Level ◽  
Low Level Laser ◽  
Level Laser ◽  
Pain Pressure Threshold

Physical activity and low-level laser therapy (LLLT) can reduce knee osteoarthritis (KOA) inflammation. We are conducting a randomized placebo-controlled trial to investigate the long-term effectiveness of LLLT combined with strength training (ST) in persons with KOA, since it, to our knowledge, has not been investigated before. Fifty participants were enrolled. LLLT and ST was performed 3 times per week over 3 and 8 weeks, respectively. In the LLLT group, 3 Joules of 904 nm wavelength laser was applied to 15 spots per knee (45 Joules/knee/session). The primary outcomes are pain during movement, at night and at rest (Visual Analogue Scale) and global pain (Knee injury and Osteoarthritis Outcome Score, KOOS) pain subscale. The secondary outcomes are KOOS disability and quality-of-life, analgesic usage, global health change, knee active range of motion, 30 second chair stand, maximum painless isometric knee extension strength, knee pain pressure threshold and real-time ultrasonography-assessed suprapatellar effusion, meniscal neovascularization and femur cartilage thickness. All the outcomes are assessed 0, 3, 8, 26 and 52 weeks post-randomization, except for global health change, which is only evaluated at completed ST. This study features the blinding of participants, assessors and therapists, and will improve our understanding of what occurs with the local pathophysiology, tissue morphology and clinical status of persons with KOA up to a year after the initiation of ST and a higher 904 nm LLLT dose than in any published trial on this topic.

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