Degenerative Joints
Degenerative joints are a natural part of the life of a joint. As they wear, become damaged, are stressed by excessive use, trauma, infection, inflammatory arthritis, they will begin to deteriorate. Deterioration, that includes narrowing of cartilage, osteophytic spurs on bones on either side of the joint and other changes do not necessarily cause pain.
Pain is associated with inflammation of the joint and in the majority of cases, degenerated joints are not inflamed or there is minimal inflammation present. One patient today presented with severely degenerated hip joints. Her joints were so worn, she basically had bone rubbing on bone. The spectacular thing was that she had minimal or no inflammation and pain. However, every time she moved the joint loud cracking was heard. These sounds occurred multiple times throughout a range of motion or when she actively contracts muscles around the joint maintaining its position.
When the joint becomes degenerated and inflamed, pain can be minimal, felt when the joint is compressed by a thumb or finger (tenderness) or active movement. However in some cases the pain is significant, producing sharp twinges of pain on certain movements and in particular when starting to move, following resting (either lying down or sitting in the case of the hip osteoarthritis). The muscles around the joint react to pain in the joint and become pain-producers as well.
So, in the case of non-painful degenerative joints, as long as you can do what you need to do and not limited by the stiffness of joints, surgery is probably unnecessary. If it is painful or stiff sufficiently that your quality of life is bad, you should speak to a surgeon and in the case of the hip joint, consider a hip replacement.

