A 64-year-old male diagnosed with arthrosis with oedema (large cartilage injury Grade III-IV), used the Delta Laser (980 nm and later 905 nm) to treat his left knee. After three months of daily self-treatments most of the pain was gone and his Western Ontario and McMaster Universities Arthritis Index (WOMAC) score improved from 47 to 82 (0 - worst possible, 100 - best possible). After six months of coMra-Therapy his WOMAC score improved to 89-91 and remained at this level. After one and a half years following the onset of symptoms he treats himself only now and then when there is a minor relapse.