Osteoarthritis (OA) is a problem of the elderly, affecting more than 300 million people worldwide. It is mainly a degenerative process affecting the cartilage of large weight-bearing joints. The knee joint is the most common joint to be affected by primary OA. It is one of the leading causes of disability and morbidity among adults, leading to pain and limitation of range of motion, which in turn affects the quality of life. Due to better health care services, the life expectancy is increasing. As a result of this, the geriatric problems are becoming more common. OA is a mechanical problem arising due to the degradation of cartilage, which in turn leads to skeletal deformities and further leads to cartilage damage. This vicious cycle continues, rendering the joint severely damaged and needing surgical intervention. This damage can be arrested by use of agents that impair this premature breakdown of the cartilage

Tofacitinib is a JAK-Stat pathway inhibitor that inhibits cartilage matrix degradation and prolongs the life of chondrocytes. It also has an anti-inflammatory action. These effects are mainly studied using in vitro models. This drug is well-studied in patients with rheumatoid arthritis and ankylosing spondylitis. But no such study has taken place in human subjects. We wish to conduct this study to look for the efficacy of Tofacitinib in OA knee patients.