Stage 2
Stage 2 OA of the knee is considered a “mild” stage of the condition. X-rays of knee joints in this stage will reveal greater bone spur growth, but the cartilage likely remains at a healthy size — the space between the bones is normal, and the bones are not rubbing or scraping one another. Synovial fluid is also typically still present at sufficient levels for normal joint motion. However, this is the stage where people may first begin experiencing symptoms — pain after a long day of walking or running, greater stiffness in the joint when it’s not used for several hours, tenderness when kneeling or bending.