Beneath the ball of your foot, under the joint that moves your big toe, are two little bones called sesamoid bones. These bones can become bruised and inflamed, which will make you feel as if you're walking on a rock. The pain is usually sharp, and the area hurts whenever you touch it or step on it.
CausesSesamoiditis usually occurs in runners with high-arched, rigid feet, which don't pronate enough and thus don't absorb shock well. Also, if you have a bunion, you're more likely to get sesamoiditis, as the bunion deformity can lead to more pressure on one of the sesamoid bones.
TreatmentYou need to relieve some of the pressure on these bones. First, change from running shoes with firm midsoles to shoes with a softer midsole. You might also use soft inserts in your shoes. If this doesn't work, cut a hole in the insole of your shoe right under the sesamoid bones. Most cases will respond to self-treatment and a change of shoes; it's rarely necessary to see a doctor.
PreventionIf you have high-arched feet, be sure to wear shoes with a soft midsole and good cushioning in the forefoot.
Can you run with it?Probably. But if the pain is too severe, rest for a few days.
Run The Planet thanks Running The World for the permission to reprint the article “Fourteen common foot ailments and their cures”. Text copyright © 2001 by Running The World.
