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

M Arun Kumar, D Venkatesh, Savita Ravindra
2021 Biomedicine  
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
more » ... fore 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.
doi:10.51248/.v41i1.538 fatcat:vfqf5ihbtzcf5nbdwvpigciqia