|Osteoarthritis (OA) is the utmost common arthropathy in the worldwide, which is considered by the deprivation of articular cartilage and affects all joint structures such as the subchondral bone, fibrocartilage, ligament, capsule, and synovium. The knee OA is highly dominant in individuals of both sexes over 50 years old, and the great levels of pain lead the loss of functional capacity and quality of life.
The impact factor of journal provides quantitative assessment tool for grading, evaluating, sorting and comparing journals of similar kind. It reflects the average number of citations to recent articles published in science and social science journals in a particular year or period, and is frequently used as a proxy for the relative importance of a journal within its field. It is first devised by Eugene Garfield, the founder of the Institute for Scientific Information. The impact factor of a journal is evaluated by dividing the number of current year citations to the source items published in that journal during the previous two years.