A 57-year-old female with knee osteoarthritis used the 980 nm Delta Laser to treat her right knee. After two weeks of daily treatments her Western Ontario and McMaster Universities Arthritis Index (WOMAC) score improved from 37 to 71 (0 - worst possible, 100 - best possible). An additional seven weeks of irregular treatments continued to improve the condition, leading to an overall increase in her WOMAC score by 40.5% (WOMAC score 78).