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Assessment of the effectiveness of low-level laser therapy (LLLT) on the knee hydrarthrosis by optoelectronics methods

MIHAELA ANTONINA CALIN1,* , GILDA MOLOGHIANU2, DAN SAVASTRU1, DRAGOS MANEA1, CONSUELA MONICA BRAILESCU2

Affiliation

  1. National Institute of Research and Development for Optoelectronics INOE 2000, Magurele, Romania
  2. National Institute of Rehabilitation, Physical Medicine and Balneoclimatology, Bucharest, Romania

Abstract

Low-level laser therapy is widely used all over the world as a method for the treatment of various diseases. However, its use for therapeutic purposes is still a controversial subject due to the lack of consensus on the effectiveness of this method in some medical applications. In this paper we investigated if low-level laser therapy is effective in the treatment of knee hydrarthrosis. The optical and thermal properties of the affected and normal knee were determined by diffuse reflectance spectrometry and thermal infrared imaging before and after each laser irradiation session. The results demonstrated that low-level laser therapy induced in the affected knee an increase of diffuse reflectance with R = 9.9094% and a decrease of average temperature with 1.92C after three treatment sessions. After three days of treatment, the values of the optical and thermal parameters for affected knee were relatively close to those of normal knee. In conclusion, the effect of low-level laser therapy on the knee hydrarthrosis was demonstrated based on the variation of two measurable physical parameters. Low-level laser therapy has proven to be effective in treating the pathology addressed, requiring only three treatment sessions so that affected tissues to gain its normal physical properties..

Keywords

Knee hydrarthrosis, Low-level laser therapy, Diffuse reflectance spectrometry, Thermal infrared imaging.

Submitted at: Jan. 22, 2014
Accepted at: May 15, 2014

Citation

MIHAELA ANTONINA CALIN, GILDA MOLOGHIANU, DAN SAVASTRU, DRAGOS MANEA, CONSUELA MONICA BRAILESCU, Assessment of the effectiveness of low-level laser therapy (LLLT) on the knee hydrarthrosis by optoelectronics methods, Journal of Optoelectronics and Advanced Materials Vol. 16, Iss. 5-6, pp. 739-774 (2014)