Osteoarthritis is a frequently slowly progressive joint disease typically seen in middle aged to elderly people. The knee joint is a common site of OA and subjects with knee osteoarthritis exhibit a characteristic pattern of decrements in function, generally concerning mobility, transfer from seated or supine positions to standing and activities of daily living involving the lower extremities. The aim of this research is to compare the effect of Pilates exercises and conventional treatment in people with knee osteoarthritis. Following outcome measures: a numeric pain rating scale; the WOMAC lower limb function score; and the Hospital Anxiety and Depression scale (HAD) were used for subjects who fulfilled the inclusion and exclusion criteria. Pilates can have immense strengthening and toning benefits, even with a moderate program. The use of controlled, progressive resistance allows for an incredibly tailored program, giving the OA clients exactly the amount of challenge appropriate. These low impact motions will optimize joint range of motion, while still building strength and coordination.