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Osteoarthritis is the most common disease ofthe joints contributing to the failure of movement. The diseasemostly affects the older part of the population, and is associatedwith suffering and reduced quality of life. Knee osteoarthritiscontributes to joint dysfunction of varying severity. These arecommon causes of chronic ailments limiting physical activity,which may even complicate the performance of activities of dailyliving. Low-level laser therapy is thought to have an analgesiceffect, as well as a biomodulatory effect on the microcirculation.The aim of this study was to evaluate the effectiveness of low--level laser therapy on pain relief and functional improvementin patients with osteoarthritis of the knee. The effects of lasertherapy alone and in combination with exercise were compared.Materials and methods40 patients of mean age 65 years withknee osteoarthritis of both sexes were divided into two groups.Laser alone was used in group I (n = 20) and laser combined withkinesistherapy was used in group II (n = 20). All patients receivedthe same dose of laser radiation, which was 3.0 J/cm², 10 Hz,400 mW. In both groups a series of 10 treatments was performeddaily. VAS, ranges of motion in the knee joint, and the strengthof the quadriceps and biceps femoris muscles were used as thecriteria of pain assessment in both groups. All measurementswere taken before and after treatment.ResultsSignificant pain reduction: I (p = 0.00009, R = 0.68);II (p = 0.00002, R = 0.86), increased range of flexion in the knee:I (p = 0.1, R = 0.90); II (p = 0.00002, R = 0.85), increasedrange of extension in the knee: I (p = 0.042, R = 0.87); II (p = 0.0004,R = 0.9) and increased strength of the quadriceps femoris muscle:I (p = 0.03, R = 0.77); II (p = 0.0002, R = 0.9) and the biceps femorismuscle: I (p = 0.04, R = 0.80); II (p = 0.0007, R = 0.91) were foundin both groups after treatment. With the exception of flexion ofthe knee (p = 0.027; r = 0.17), there were no statistically significantdifferences in other analysed parameters between the useof laser alone and laser therapy combined with exercise.ConclusionThe use of laser in knee osteoarthritis reducespain and improves the functional status of the patient. Lasertherapy combined with kinesistherapy produces better therapeuticeffects, and effectively improves the functional status ofknee osteoarthritis. Exercise therapy applied in a series of 10treatments is too short to significantly improve the functionalstatus of the patient.

pomeranian journal of life sciences

Wpływ lasera biostymulacyjnego niskoenergetycznego i ćwiczeń usprawniających na zmniejszenie dolegliwości bólowych i poprawę funkcjonalną u pacjentów z chorobą zwyrodnieniową stawów kolanowych