WalkitoGet the appSesamoiditis: what it is, what helps, and when to get imaging
Sesamoiditis is inflammation of the two small bones embedded in the tendon under the big toe joint. The pain usually sits right under the ball of the foot, beneath the big toe, and gets worse when you push off during walking or running. This page covers what causes it, what offloading and footwear changes can do, and when imaging is worth pursuing.
The sesamoid bones are about the size of a corn kernel. They sit inside the flexor hallucis brevis tendon and act as a pulley, helping the big toe push off the ground. When they become irritated, whether from overuse, a sudden increase in activity, or repeated pressure, the result is a dull ache under the first metatarsal head that can make every step uncomfortable.
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What are the sesamoid bones and why do they hurt?
The two sesamoid bones sit under the head of the first metatarsal, the long bone behind the big toe. The medial sesamoid, closer to the center of the foot, is the one that is injured more often. Together they help the big toe push off the ground and absorb force during the push-off phase of walking.
Sesamoiditis develops when those bones or the surrounding tissues become inflamed. Activities that load the forefoot repeatedly, such as running, dancing, or jumping, are common triggers. So is a sudden increase in training volume. People with high arches or a prominent first metatarsal head are more prone to the condition because more pressure lands on that spot.
The term sesamoiditis is used broadly in practice and does not have one strict definition. It can describe inflammation of the bones themselves, the surrounding soft tissues, or both. A 2025 systematic review noted that there are still no standardized guidelines for its conservative management.
How is sesamoiditis different from a sesamoid fracture?
Sesamoiditis is an overuse condition. The pain comes on gradually and aches during activity. A sesamoid fracture is a crack in the bone, usually from a single acute event or from chronic stress. Fracture pain tends to be sharper and may be present even at rest.
One complication is that about 1 in 10 people have a bipartite sesamoid, meaning the medial sesamoid naturally comes in two pieces. On an X-ray, a bipartite sesamoid looks like a fracture. The difference is in the edges: bipartite edges are smooth and rounded, while fracture edges are jagged and irregular. Your clinician may also X-ray the other foot for comparison.
If X-rays are unclear, a bone scan or MRI can confirm the diagnosis. An MRI shows bone marrow edema, swelling inside the bone, which is present in most cases of sesamoiditis. MRI is usually reserved for cases where symptoms persist despite initial management.
What does conservative management look like?
The 2025 systematic review by Biz and colleagues pooled individual-level data from 11 studies covering 59 patients. The most common treatments were orthotics, activity modification, and corticosteroid injections. Pain scores improved in about 66 percent of cases, but recurrence was common and some patients remained symptomatic.
The review found that orthotics and offloading were used in nearly every case. Corticosteroid injections gave short-term relief but carried a risk of recurrence. No treatment was compared head to head in a randomized trial. The authors concluded that standardized protocols and higher-quality studies are needed.
Surgery, usually partial or total sesamoidectomy (removal of the bone), is considered only when several months of conservative care have not helped. Most clinicians try at least three to six months of non-surgical management first.
Biz 2025: 11 studies, 59 patients (29 female), case reports and case series only. VAS improved in 66% of cases. 45.4% resumed pain-free sport in one case series. No RCTs identified.
What is a dancer's pad and how does it work?
A dancer's pad is a flat felt or foam pad with a U-shaped cutout under the first metatarsal head. The cutout sits right over the sesamoid area so that the pad lifts the surrounding forefoot while relieving direct pressure on the painful spot. The name comes from ballet, where forefoot loading is extreme.
You can buy pre-cut dancer's pads or have a clinician cut one to fit your foot. Placement matters: the cutout must sit directly under the sesamoid bones, not too far forward or back. Some people use the pad inside a shoe; others have it built into a custom insole.
A stiff-soled or rocker-bottom shoe reduces how much the big toe joint bends during push-off, which limits loading on the sesamoids. Avoiding flexible, thin-soled shoes and high heels during the symptomatic period helps for the same reason.
Does footwear matter?
Shoes play a supporting role. A shoe with a stiff sole limits first metatarsophalangeal joint (the big toe joint) motion, which directly reduces stress on the sesamoids. Rocker-bottom soles do the same thing by rolling the foot through push-off without requiring the toe to bend.
Avoid shoes that are flexible at the forefoot, very flat, or have a thin sole. High heels push weight forward onto the ball of the foot, increasing sesamoid load. If running triggered the problem, temporarily switching to a shoe with more forefoot cushioning and a higher stack height may help while symptoms settle.
These changes alone will not resolve the condition if the underlying irritation is significant, but they reduce the load that caused the problem in the first place.
What role does exercise play?
The honest answer is that exercise has a limited role in managing sesamoiditis itself. Unlike plantar fasciitis or Achilles tendonitis, where loading programs have good trial support, there are no exercise trials for sesamoiditis. The 2025 systematic review did not identify any study testing a specific exercise protocol.
What exercise can help with is the surrounding picture. A tight calf shifts weight onto the forefoot during walking. Stretching the gastrocnemius and soleus can reduce that forward load. Weak intrinsic foot muscles may also contribute to uneven forefoot pressure distribution. Toe spreads and short foot work may help share the load more evenly across the metatarsal heads, though this has not been tested for sesamoiditis specifically.
If you are recovering from sesamoiditis and have lost toe strength or calf flexibility during the rest period, gentle exercises for the ball of foot area can be part of a return-to-activity plan. But offloading and activity modification are the primary tools, not exercise.
How does sesamoiditis relate to other forefoot conditions?
Sesamoiditis pain sits under the big toe, which separates it from broader ball of foot pain (metatarsalgia), where pain is usually under the second and third metatarsal heads. Morton's neuroma produces tingling or burning between the third and fourth toes, not under the big toe.
Gout can also affect the big toe joint and feels similar at first, but gout comes on suddenly, often overnight, with redness, swelling, and heat. Sesamoiditis develops gradually. If the onset was sudden and the joint is red and warm, see a clinician to rule out gout or infection.
Hallux rigidus, stiffness and arthritis of the big toe joint, can also cause pain in a similar location but involves the joint itself rather than the sesamoid bones underneath.
Questions people ask
How long does sesamoiditis take to get better?
Sesamoiditis recovery varies widely. Mild cases may settle in a few weeks with offloading and activity changes. More persistent cases can take three to six months. In the 2025 systematic review, some patients returned to pain-free sport while others remained symptomatic despite conservative care.
Can you walk with sesamoiditis?
Most people can still walk, but push-off is painful. A dancer's pad inside the shoe and a stiff-soled shoe can reduce the load enough to make walking more comfortable. Avoiding barefoot walking on hard surfaces helps during the symptomatic period.
Do I need an MRI for sesamoiditis?
Not always. An X-ray is usually the first step and can distinguish a fracture from a bipartite sesamoid. An MRI is useful when X-rays are normal but symptoms persist, or when the clinician wants to check for bone marrow edema or soft tissue damage.
What is a bipartite sesamoid?
A bipartite sesamoid is a normal anatomical variant where the medial sesamoid bone naturally comes in two pieces. About 1 in 10 people have one. On X-ray it can look like a fracture, but the edges are smooth and rounded, not jagged.
Is sesamoiditis the same as turf toe?
No. Turf toe is a sprain of the ligaments around the big toe joint, usually from a single hyperextension injury. Sesamoiditis is chronic inflammation of the sesamoid bones from repetitive loading. Both hurt under the big toe, but turf toe has a clear injury event and may involve ligament damage.
Can exercises prevent sesamoiditis from coming back?
No exercise has been tested for sesamoiditis prevention. Calf stretching to reduce forefoot load and intrinsic foot strengthening to share pressure more evenly are reasonable ideas but are not proven for this condition specifically. Ongoing use of a dancer's pad and appropriate shoes is the more established strategy.
See a clinician first if
- Pain started suddenly after a fall, jump, or direct blow to the forefoot, which may indicate a fracture
- The big toe joint is red, warm, and swollen, especially if it came on overnight, which could be gout or infection
- Pain does not improve after two to three weeks of offloading and activity modification
- You notice numbness or tingling in the big toe
- You cannot bear weight on the forefoot at all
- You have a fever alongside foot pain
Doing it as a plan
Sesamoiditis is primarily managed with offloading and footwear, not with an exercise program. Walkito is built for conditions like plantar fasciitis and flat feet, where structured loading programs have trial support. If your sesamoiditis clears and you want to rebuild foot and calf strength as part of returning to activity, the app's intrinsic foot work and calf stretches may be a useful addition.
If forefoot pain is broader and involves the second or third metatarsal heads, see the ball of foot pain page for exercises with more evidence behind them.
Updated
Walkito is an exercise program. It does not diagnose and does not treat. If pain is sharp, getting worse, or stopping you sleeping, see a clinician.