Health
Low-Dose Radiation: New Relief for Knee Pain
Health Points
- Low-dose radiation is showing promise for easing knee osteoarthritis symptoms.
- In recent studies, most participants experienced significant pain and function improvement.
- Doctors emphasize more research is needed for long-term safety and broader use.
For those living with knee osteoarthritis, new research from Korea highlights low-dose radiation therapy as a potential alternative when other treatments fall short.
This therapy, widely used in Europe for decades, was recently tested in a controlled study that included 114 adults with mild-to-moderate knee osteoarthritis.
Participants were assigned to receive either low-dose or very low-dose radiation, or a sham treatment that simulated the experience without delivering any actual radiation.
At the four-month mark, around 70 percent of patients in the low-dose group reported meaningful improvement in pain, function, or overall assessment—significantly higher than those receiving placebo or very low-dose treatments.
“This promotes an anti-inflammatory environment and leads to decreased joint inflammation and, consequently, pain relief,” says Dr. Austin Kirschner of Vanderbilt University.
While radiation therapy is rarely used for osteoarthritis in the U.S., experts note concerns around radiation exposure have lessened as evidence grows.
Additional studies support these findings, with one showing a notable reduction in disability and another reporting a drop in pain scores after radiation therapy.
However, researchers caution that longer-term studies are needed to fully understand the ongoing benefits and potential risks.
If you’re experiencing persistent knee pain, consult your doctor about your options—low-dose radiation could become an important therapy for those not finding relief elsewhere.