Low-Dose Radiation Therapy for Plantar Fasciitis and Heel Spur

Plantar fasciitis and heel spur (calcaneal enthesopathy) are distinct conditions from osteoarthritis. They are painful benign conditions of the plantar fascia and calcaneal insertion — not joint degeneration. However, they are treated with the same low-dose radiotherapy approach and are covered by the DEGRO S2e guideline on radiotherapy for benign diseases.

Guideline and Evidence Status

LDRT for plantar fasciitis is established practice in Germany with multiple prospective and randomized trials supporting its use. The DEGRO S2e guideline recommends it for refractory cases: 0.5–1.0 Gy/fraction, 3.0–6.0 Gy total.

Coverage

Blue Shield of California policy 7.01.179 classifies LDRT as investigational for plantar fasciitis. Coverage varies by payer. See cost and coverage page.

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Calming inflammation at the plantar fascia

• 01 - Inflamed heel - A reactive fascia origin: Plantar fasciitis usually centers where the plantar fascia attaches at the inner heel bone, not inside a joint.
• 02 - During treatment - Local signaling shifts: Small doses aim to calm inflammatory signaling around the painful attachment, not destroy tissue.
• 03 - The weeks after - A quieter heel: Inflammation around the heel origin may settle over the following weeks.

What changes: inflammatory behavior. What does not: the fascia is not reattached, a heel spur does not disappear, and the arch does not change.

See also: All joints treated with LDRT | Related: Foot & Ankle OA

Medically reviewed by: Robert Warren Floyd, M.D., Ph.D. — Resident Physician, Radiation Oncology, The University of Texas MD Anderson Cancer Center. Last reviewed: September 8, 2026. Independent personal project — not affiliated with or endorsed by MD Anderson Cancer Center. Funding & independence disclosure.

This content is for education only and is not medical advice. Always consult a qualified healthcare provider for diagnosis and treatment decisions.