Sesamoiditis Treatment 2026 | Michigan Podiatrist

What Are the Sesamoids and Why Do They Hurt?

The sesamoid bones are two small, almond-shaped bones embedded within the tendons beneath the first metatarsophalangeal (MTP) joint — the joint at the base of the big toe. Unlike most bones that are connected to other bones by joints, sesamoids float within tendon tissue and serve a specific mechanical function: they increase the mechanical advantage of the flexor hallucis brevis muscle during push-off, much like the patella increases the use of the quadriceps at the knee.

Because they sit directly beneath the ball of the foot, the sesamoids bear the full force of body weight during the push-off phase of gait — a force that can reach 2–3 times body weight during running and jumping. In individuals with high arches, forefoot-heavy gait patterns, or those who participate in activities with significant forefoot loading (ballet, running, basketball, hill hiking), this repetitive stress can cause sesamoiditis — inflammation of the sesamoid bone and surrounding tendon tissue.

Types of Sesamoid Problems

Sesamoiditis refers to chronic overuse inflammation without acute fracture. Sesamoid stress fractures occur when repetitive loading exceeds the bone’s remodeling capacity — common in distance runners, dancers, and basketball players. Sesamoid fractures can also result from acute trauma such as a direct impact fall. Bipartite sesamoid — a normal anatomic variant where one sesamoid is divided into two pieces — is present in 10–30% of the population and can be mistaken for a fracture on X-ray; MRI distinguishes this normal variant from a true acute fracture. Avascular necrosis (osteonecrosis) of the sesamoid — loss of blood supply leading to bone death — is a serious complication requiring surgical management.

Conservative Treatment for Sesamoiditis

Offloading is the cornerstone of sesamoiditis treatment. Felt dancer’s pads — J-shaped cutouts placed in the shoe to transfer weight away from the sesamoid area — provide immediate pain relief during conservative management. Rigid-soled footwear eliminates the forefoot flexion that loads the sesamoids during push-off. Custom orthotics with sesamoid offloading accommodation redistribute plantar pressure away from the first metatarsal head. Activity modification away from impact sports and barefoot walking is required during the healing phase. Intra-articular corticosteroid injection under ultrasound guidance reduces acute sesamoid inflammation and can provide 3–6 months of pain relief in appropriate cases.

Surgical Treatment

Sesamoidectomy — surgical removal of one or both sesamoids — is indicated for fractures that fail to heal with conservative management, avascular necrosis, and chronic sesamoiditis refractory to 6 months of conservative care. Dr. Biernacki performs sesamoidectomy through a minimally invasive plantar or dorsal approach with careful preservation of the flexor hallucis brevis tendon to prevent iatrogenic hallux deformity. Recovery involves 4–6 weeks of protected weight-bearing followed by progressive return to activity. Outcomes are excellent for carefully selected patients with appropriately indicated surgery.

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Frequently Asked Questions

When should I see a podiatrist?

If symptoms persist past 2 weeks, affect your normal activity, or are accompanied by red-flag symptoms (warmth, redness, swelling, inability to bear weight).

What does treatment cost?

Most diagnostic visits and conservative treatments are covered by Medicare and major insurers. Out-of-pocket costs vary by your specific plan.

How quickly can I get an appointment?

Most non-urgent cases see us within 5 business days. Urgent cases (sudden pain, possible fracture) typically same or next business day.

Frequently Asked Questions

What is sesamoiditis and what causes it?

Sesamoiditis is inflammation of the two pea-sized sesamoid bones embedded in the flexor tendons beneath the first metatarsal head (big toe joint). The sesamoids act as a pulley for the flexor hallucis brevis, absorbing significant load with every push-off. Causes include high-impact activity (running, dancing, jumping), high-arched feet that concentrate load under the first ray, thin-soled footwear, and sudden activity increases. It’s most common in runners and dancers in their 20s–40s.

What does sesamoiditis feel like?

A dull to sharp ache directly under the big toe joint — specifically at the ball of the foot, not at the toe knuckle. Pain worsens with push-off, going up on tiptoe, and wearing heels. Walking downstairs or on uneven ground is often uncomfortable. Unlike Morton’s neuroma, there’s no radiating pain into the toes. Unlike plantar fasciitis, the pain is not worst with first morning steps — it builds with activity and improves with rest.

How long does sesamoiditis take to heal?

Mild cases: 4–8 weeks with proper offloading. Moderate cases: 3–4 months. Severe sesamoiditis with bone edema on MRI: 4–6 months, sometimes longer. Sesamoid fractures (which can occur alongside sesamoiditis) require a walking boot for 6–8 weeks and may need surgical removal if they don’t heal. The most important factor is consistent load reduction during the healing phase — patients who continue high-impact activity through sesamoiditis triple their recovery time.

What is a dancer’s pad and does it help sesamoiditis?

A dancer’s pad (also called a J-pad or sesamoid offloading pad) is a felt or foam pad with a cutout beneath the sesamoid bones. It redirects load to the surrounding metatarsal head while leaving the painful area pressure-free. It’s one of the most effective short-term interventions for sesamoiditis — most patients report significant pain reduction within 1–2 weeks of correct placement. We fabricate these in-office. They’re more effective than standard metatarsal pads for first-ray pathology.

Do I need a walking boot for sesamoiditis?

Moderate-to-severe cases benefit significantly from a short period (2–4 weeks) in a walking boot to completely offload the sesamoids. If pain is present with normal walking or the MRI shows bone edema (stress reaction), a boot is typically recommended. Mild cases can often be managed with a dancer’s pad alone. A boot is not an admission that surgery is coming — it’s an aggressive conservative treatment to reset the inflammation and give the bone a chance to recover.

What are the best insoles for sesamoiditis?

Insoles with a first-ray cutout or dancers’ modification are most effective — standard arch support doesn’t help sesamoiditis because the problem is under the first metatarsal, not the arch. Custom orthotics with a first-ray cutout are the gold standard; quality OTC options include the Powerstep Pinnacle with added padding modified to offload the first ray. In our clinic, we modify OTC insoles in-office for sesamoiditis patients who don’t yet need custom fabrication.

Can sesamoiditis lead to surgery?

In fewer than 10% of cases. Surgery (sesamoidectomy — removal of the affected sesamoid) is considered after 6–12 months of failed conservative management, or when there’s a displaced fracture that won’t heal. Results are generally good — 80–85% of patients return to full activity. However, removing the tibial (medial) sesamoid can cause hallux valgus (bunion) as a complication, so indications are carefully considered. We exhaust all conservative options before recommending sesamoidectomy.

Can I run with sesamoiditis?

Running through active sesamoiditis risks stress fracture and significantly delays recovery. During the acute phase (pain >3/10 with walking), rest from impact completely. Swimming and cycling are excellent alternatives. As symptoms improve, a gradual return begins — short runs on soft surfaces with a dancer’s pad, increasing distance by no more than 10% weekly. Full return to unrestricted running typically takes 3–6 months. Runners who skip the rest phase reliably end up in a boot for 3 months instead.

Is a sesamoid stress fracture the same as sesamoiditis?

No — but they coexist frequently and present identically. Sesamoiditis is soft tissue inflammation; a stress fracture is an actual crack in the bone from repetitive overload. X-ray often can’t distinguish them from a bipartite sesamoid (a naturally two-part bone present in 10–30% of people). MRI is the definitive diagnostic tool — bone marrow edema on MRI confirms stress reaction or fracture. This distinction matters because stress fractures require more aggressive rest and longer protection.

What shoes should I wear for sesamoiditis?

Stiff-soled shoes that minimize first MTP joint flexion are most protective — a stiff rocker-bottom sole prevents the push-off motion that loads the sesamoids. Hoka Bondi and similar maximally cushioned rocker designs are excellent. Avoid flexible, thin-soled shoes entirely. Heels of any height are contraindicated because they increase forefoot load. For daily use, a stiff-soled casual shoe with an added dancer’s pad provides good protection.

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In-Office Treatment at Balance Foot & Ankle

If home treatment isn’t providing relief for your foot issues, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.