Sesamoiditis is a type of tendonitis (tendon inflammation) that affects the ball of the foot. Because the tendons in the ball of the foot contain small sesamoid bones, they can become inflamed alongside the tendons.
WHAT ARE THE CAUSES & RISK FACTORS?
Overuse of the tendons that interact with the sesamoid bones in the foot usually causes sesamoiditis. Over-practicing movements that transfer weight to the ball of the foot causes it in runners, dancers, and athletes. Walking can cause it in people who wear high heels, have very high arches or flat feet, or walk with an inward roll.