Glossary
Osteophytes (bone spurs)
Quick answer
Osteophytes, often called bone spurs, are small outgrowths of bone at the edges of a joint. In the knee they are one of the classic signs of osteoarthritis, forming as the joint tries to spread load, explains Doha knee surgeon Dr. Pablo Gelber, who reviews knee X-rays at Aman Hospital.
What they are
When cartilage wears, the bone at the margins of the joint reacts by growing small lips or ridges. On an X-ray they look like pointed edges around the femur, tibia or kneecap. Reports may say marginal, small, moderate or large osteophytes.
The word spur sounds sharp and painful, but most osteophytes are smooth and are not themselves the main cause of pain.
Why they matter
Osteophytes are a marker of how far arthritis has progressed. Together with joint space narrowing, they are used to grade osteoarthritis on X-ray. Large osteophytes can limit how far the knee bends or straightens, and one at the front of the joint can block full extension.
The amount of change on the X-ray does not always match symptoms. Some people with large spurs have little pain, and the reverse.
How they are managed
Treatment is aimed at the osteoarthritis, not the spurs: exercise and strengthening, weight management, pain relief, injections, bracing and, if needed, osteotomy or knee replacement. Osteophytes are removed during replacement surgery. Removing them alone by arthroscopy rarely helps unless one is clearly blocking movement.
Frequently asked questions
Can bone spurs be dissolved?
No medicine or diet dissolves osteophytes. They are bone. Treatment focuses on easing symptoms and keeping the knee strong and moving.
Do osteophytes mean I need a knee replacement?
Not by themselves. Replacement is considered when pain and loss of function remain severe despite good non-surgical treatment.
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