Osteoarthritis is the most common form of arthritis and affects hundreds of millions of people around the world.
It becomes more common as people get older, although younger adults can also develop it after joint injuries or because of excess body weight.
The condition most often affects the knees, hips, hands, and spine. It happens when the cartilage, the smooth tissue that covers the ends of bones inside a joint, slowly wears away. Healthy cartilage allows bones to move smoothly without rubbing together.
As cartilage becomes thinner, bones begin to rub against each other, causing pain, stiffness, swelling, and difficulty moving. Over time, everyday activities such as walking, climbing stairs, or getting out of a chair can become much harder.
For many people with severe osteoarthritis, pain medicines, exercise, weight management, and physical therapy help for a while, but they do not stop the disease from getting worse.
When the damage becomes too severe, doctors often recommend knee or hip replacement surgery.
These operations can greatly improve quality of life, but they are major procedures that require rehabilitation and carry risks such as infection and blood clots. Finding a treatment that could delay or prevent surgery has therefore become an important goal for researchers.
A new international study has now provided encouraging results. Scientists found that a small daily dose of colchicine, a medicine that has been used for many years to treat gout and some other inflammatory conditions, may reduce the number of people who eventually need knee or hip replacement surgery.
Although colchicine is not currently approved as a treatment for osteoarthritis, researchers became interested in it because inflammation is now known to play an important role in joint damage. Osteoarthritis was once thought to be simply the result of aging and wear and tear.
Scientists now understand that inflammation inside the joint can speed up cartilage damage and make symptoms worse. A medicine that reduces inflammation might therefore help slow the disease.
Researchers from Sint Maartenskliniek and Radboud University Medical Center in the Netherlands worked with 43 medical centers across Australia and the Netherlands. They followed 5,522 adults between 35 and 82 years of age for about two and a half years.
Half of the participants took 0.5 milligrams of colchicine each day, while the other half received a placebo, which looked the same but contained no active medicine. This allowed the researchers to compare the two groups fairly.
By the end of the study, fewer people taking colchicine needed knee or hip replacement surgery. About 2.5% of people in the colchicine group underwent joint replacement, compared with 3.5% of those taking the placebo. Although the difference was only about one percentage point, it suggests that the medicine may help slow the progression of osteoarthritis. Across large populations, even a small reduction like this could mean thousands fewer joint replacement operations.
The researchers also noticed that the benefit appeared stronger in men than in women. However, there were not enough women in the study to know whether the same effect applies equally to them. More studies with a better balance of male and female participants will be needed before firm conclusions can be made.
Even with these promising findings, experts are not recommending colchicine as a routine treatment for osteoarthritis at this stage. Like all medicines, colchicine can cause side effects, especially if it is taken for long periods or at higher doses. Possible side effects include stomach upset, diarrhea, and, in rare cases, more serious problems. Doctors need more evidence about its long-term safety and whether the benefits continue over many years.
Another important finding is that this research shows the value of repurposing existing medicines. Developing a completely new drug can take many years and cost billions of dollars. If an older, low-cost medicine already available in hospitals and pharmacies can safely help people with osteoarthritis, patients could benefit much sooner.
The study also highlights the growing challenge of osteoarthritis around the world. As people live longer and obesity becomes more common, the number of people living with painful joints continues to rise. New treatments that delay surgery could improve quality of life, reduce healthcare costs, and help people remain active for longer.
The research was published in the Annals of Internal Medicine. While more studies are needed before treatment guidelines change, the findings offer fresh hope that a simple daily pill may one day become another option for slowing osteoarthritis and reducing the need for joint replacement surgery.
If you care about bone health, please read studies that plant-based diets can harm your bone health without these nutrients, and how to ease arthritis with anti-inflammatory foods.
For more health information, please see recent studies that too much of this vitamin may increase your risk of bone fractures, and results showing this type of exercise may protect your bone health, slow down bone aging.
Copyright © 2026 Knowridge Science Report. All rights reserved.
