Sesamoiditis is a common cause of pain right under the big toe, at the ball of the foot. It comes from irritation of the sesamoids — two tiny bones, each about the size of a pea, tucked into the tendons beneath the big toe joint — and the tendons around them. Because those little bones take a beating every time you push off, sesamoiditis tends to show up in people who run, dance, or spend a lot of time on the balls of their feet. The good news is it usually calms down with rest and offloading; the catch is that it can be slow to heal. Here’s what causes it and how to settle it.
The sesamoids are two small bones embedded in the tendons under the big toe joint, sitting between the first metatarsal and the big toe. They work like a pulley — absorbing shock and giving the big toe leverage as you push off. When those bones and the tendons around them are overloaded, they become irritated and inflamed. That’s sesamoiditis, and it’s essentially a form of tendinitis in the ball of the foot.
Sesamoiditis usually causes a dull, building ache under the big toe that’s worst as you push off while walking or running, and eases with rest. There may be some swelling, and bending the big toe up can be uncomfortable. The pattern is typically gradual — coming on over days or weeks. A sudden, sharp pain under the big toe after a hard landing is different and can mean a sesamoid fracture rather than sesamoiditis, which is one reason a persistent or severe case is worth having imaged.
The sesamoids have a limited blood supply, so they can be slow to recover — mild cases may ease in days, while more stubborn ones take months. If your pain isn’t improving despite rest, better shoes, and offloading, that’s worth a closer look rather than simply waiting it out, and it’s a good time to read about the broader picture of ball of foot pain.
Sesamoiditis can be slow to heal, and forefoot pain that lingers past rest, better shoes, and offloading may point to persistent tendon and bone inflammation. Our non-surgical 3-Month Regenerative Therapy Program — PRP, ozone, and hyperbaric oxygen — targets stubborn forefoot problems like this. Whether it’s a fit depends on an in-person evaluation.
Most sesamoiditis treatment starts with taking pressure off the area and letting it calm down:
Because sesamoiditis and a sesamoid fracture are treated differently, getting the diagnosis right is what points you to care that actually helps. Learn more about our metatarsalgia (ball of foot) treatment in Long Beach, or if your pain followed a forced upward bend of the toe, see our guide to turf toe. You can also call (562) 426-2551 or read Cleveland Clinic’s overview of sesamoiditis.
Sesamoiditis is irritation and inflammation of the two tiny sesamoid bones under the big toe and the tendons around them, usually from repetitive pressure on the ball of the foot. It’s a form of tendinitis, common in runners and dancers, and it causes pain that’s worst when you push off.
Start by resting and icing the ball of the foot, switching to soft-soled low-heeled shoes, and offloading the area with a pad or insole; an anti-inflammatory can help if appropriate for you. Because sesamoids heal slowly and a fracture needs different care, pain that isn’t improving should be evaluated rather than trained through.
Mild cases can settle in a few days, but more stubborn ones take months because the sesamoids have a limited blood supply. If it isn’t improving with rest and offloading, have it checked rather than simply waiting, since a stress fracture can look similar.
It’s usually a dull ache under the big toe that builds with activity and is worst on push-off, sometimes with swelling and a big toe that hurts to bend up. A sudden, sharp pain instead of a gradual ache can mean a sesamoid fracture and should be evaluated.
See one if the pain persists despite rest, better shoes, and offloading, or if it came on suddenly and sharply or you can’t bear weight — both point to needing imaging. If you have diabetes or poor circulation, have any foot pain looked at in person rather than waiting.