What is Sesamoiditis?

What Causes Sesamoiditis?

The sesamoid bones beneath the big toe help the foot push off with every step, so repeated forefoot pressure can irritate them. A rapid increase in running, ballet and dance, high-heeled or thin-soled shoes, altered load distribution and a direct blow are common causes.

Symptoms

• Pinpoint pain under the big toe at the front of the sole
• Ache that increases when rising onto the toes or bending the big toe
• Marked tenderness when pressing over the sesamoid bones
• Mild forefoot swelling and discomfort inside shoes

Frequently Asked Questions

How is sesamoiditis distinguished from a sesamoid fracture?

Both can cause pain beneath the big toe. Examination considers the exact tenderness and onset; X-rays may show a fracture or shape difference, while MRI can show bone marrow swelling and nearby tissue changes. Reducing load, using a protective insole and choosing suitable shoes are common first steps.