Grading of Knee Osteoarthritis Based on Kellgren-Lawrence Classification and Finding an Association Between Radiographic Features and Pain: A Cross-Sectional Study at a Tertiary Health Care Hospital.

: Osteoarthritis leads to painful joints, disability, restriction of ambulation, and reduces the person's ability to perform activities of daily living. Pain is one of the major symptoms of osteoarthritis. Some patients presented with severe pain while some with severe deformity.