Cartilage is the firm, rubbery tissue that cushions your bones at the joints, and allows bones to glide over one another. If the cartilage breaks down and wears away, the bones rub together. This causes pain, swelling, and stiffness. Bony spurs or extra bone may form around the joint. The ligaments and muscles around the joint become weaker and stiffer.
Pain and stiffness in the joints are the most common symptoms. The pain is often worse after exercise and when you put weight or pressure on the joint. The joints probably become stiffer and harder to move and a rubbing, grating, or crackling sound heard when you move the joint.
The phrase "morning stiffness" refers to the pain and stiffness you may feel when you first wake up in the morning. Stiffness usually lasts for 30 minutes or less. It is improved by mild activity that "warms up" the joint. During the day, the pain may get worse when you're active and feel better when you are resting..
Some people might not have symptoms, even though x-rays show the changes of OA
OA cannot be cured. It will most likely get worse over time. However, your OA symptoms can be controlled by regular exercises, amending lifestyle & by following doctor’s advice.