The MSK Specialist

What Is Bursitis in the Foot? Bursitis in the foot occurs when one or more bursae, fluid-filled sacs that cushion bones, tendons and muscles, become inflamed. These bursae reduce friction in the foot during movement. There are more than 30 bursae in the foot, with common locations including the ball of the foot, heel, and base of the big toe. When inflamed, they cause foot pain, swelling, and discomfort during walking or standing. Where Can Bursitis Occur in the Foot? Bursitis can develop in multiple locations across the foot due to pressure or repetitive strain: Ball of the foot : Often called bursitis of the ball of the foot; pain centres under the metatarsal heads. Heel : Known as heel bursitis, it typically affects the retrocalcaneal bursa. Big toe and great toe : Causes include bursitis big toe, bursitis great toe, and a bursa on the toe, often misdiagnosed as gout or bunions. Top of the foot : Bursitis here causes pain on the top of the foot, especially wh...