Radiant Joint Alliance is a 501(c)(3) nonprofit organization focused on patient education and awareness about low-dose radiation therapy (LDRT) for osteoarthritis. Its physician-reviewed resources explain what LDRT is, what research and professional guidance say about it, potential benefits and limitations, and what patients may expect during treatment. The site describes LDRT as a non-surgical, outpatient option in which a radiation oncologist delivers a low dose to an affected joint, typically across six brief visits over two to three weeks. It encourages people to discuss suitability and risks with their healthcare team and does not provide medical advice.

The organization offers arthritis and treatment information, research summaries, articles, patient guides, FAQs, and practical guidance for preparing for a medical conversation. Its online directory lists more than 600 hospitals, clinics, and cancer centers offering LDRT across all 50 states, Washington, DC, and Guam. Radiant Joint Alliance also provides information for physicians, introduces its medical advisors, and invites visitors to volunteer or donate.