Found this…. Hope to hear doctor’s interpretations of the X-ray results soon.

Osteoarthritis causes the cartilage and synovium in the knee to wear down, often leading to bone spurs growing in their place. The cartilage may also get rough or break down completely.

This process worsens over time and often causes symptoms, including:

localized pain and inflammation
joint effusion, or water on the knee
chondrosis, wherein the soft or smooth cartilage breaks down
joint stiffness and difficulty moving the joint, especially after long periods of inactivity
bone spurs, or exostosis, in the knee that are visible on X-ray images
knees that lock up due to bone spurs
weakness or buckling in the knees
a change in gait, typically a knock-kneed or bowlegged walking gait
Symptoms may get worse after sitting or resting for a long period of time. Impact exercises may also cause more pain and swelling in the joint.