Medically reviewed by Dr. Tom Biernacki, DPM
Board-certified podiatric surgeon | Balance Foot & Ankle, Howell & Bloomfield Hills, MI
Last reviewed: May 2026
Quick answer: Sesamoiditis Sesamoid Fracture Foot Michigan Podiatrist can significantly impact your daily life and mobility. Our Michigan podiatrists provide expert evaluation and evidence-based treatment — from conservative care to minimally invasive procedures — to relieve your symptoms and restore function. Same-day appointments available in Howell and Bloomfield Hills, MI.
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| Condition | Onset | X-ray | MRI / Bone Scan | Key Differentiator |
|---|---|---|---|---|
| Sesamoiditis (tendinopathy) | Gradual; overuse in runners, dancers, high-heeled shoe wearers | Normal bone; no fracture line | Bone marrow edema without fracture line; tendon inflammation | No fracture; responds to offloading and orthotics |
| Acute Sesamoid Fracture | Acute — forced dorsiflexion or direct impact | Fracture line; may be comminuted | Acute edema; fracture line confirmed | Trauma history; acute onset; fracture line on CT |
| Stress Fracture | Gradual; repetitive loading; runners, ballet dancers | May be normal early; sclerosis or lucency in chronic cases | Bone marrow edema + fracture line; MRI most sensitive early | Activity-related progression; bilateral X-ray — compare to contralateral |
| Avascular Necrosis (AVN) | Insidious; chronic; may follow fracture or steroid injection | Sclerosis; fragmentation; collapse of sesamoid | Decreased T1 signal; loss of normal marrow fat; fragmentation | Fragmented sesamoid on imaging; history of fracture or steroid injection |
| Bipartite Sesamoid (normal variant) | Asymptomatic or incidental | Two smooth rounded fragments; smooth edges (not sharp fracture margins) | No marrow edema unless acutely inflamed | Smooth corticated margins; bilateral in 25%; compare to other foot |
| Treatment | Indication | Duration | Success Rate | Notes |
|---|---|---|---|---|
| Dancer’s Pad / Sesamoid Offloading Orthotic | Sesamoiditis; stress fracture; all conservative cases first-line | 6–12 weeks minimum | 70–80% resolution sesamoiditis; slower for fracture | J-shaped cutout beneath sesamoid in custom orthotic; redistributes pressure |
| NWB Short-Leg Cast / CAM Boot | Acute fracture; stress fracture; AVN; severe sesamoiditis | 6–8 weeks NWB then protected WB | 60–75% fracture union conservative; higher for non-displaced | Non-displaced fractures heal conservatively; displaced or comminuted → surgery |
| Corticosteroid Injection (guided) | Sesamoiditis with significant inflammation; not fracture | Single injection; repeat × 1 if needed | 50–65% short-term relief | Limit injections — risk of AVN with repeated steroid; confirm no fracture first |
| Sesamoidectomy | Failed 6 months conservative; AVN; displaced fracture; chronic pain | 4–6 weeks protective; 3–4 months full activity | 80–85% pain relief | Medial (tibial) sesamoid preferred approach; preserve FHB; hallux valgus/varus risk if both removed |
| Bone Stimulator (ultrasound / ESWT) | Delayed union; stress fracture not healing at 3 months | Daily 20 min × 3–6 months (US stimulator); or 3 ESWT sessions | 55–65% union in recalcitrant cases | Adjunct to offloading; avoids surgery in motivated patients |
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Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
Quick Answer:
Quick Answer: Sesamoiditis — inflammation of the sesamoid bones under the 1st metatarsal head — causes pain under the big toe with weight-bearing and push-off. It is common in ballet dancers, runners, and high-heeled shoe wearers. Diagnosis requires distinguishing sesamoiditis (inflammation), stress fracture, acute fracture, and avascular necrosis — each requiring different management. Conservative care (offloading, orthotics) resolves most cases. Surgical sesamoidectomy is reserved for refractory pain.
The sesamoid bones are two small bones embedded within the flexor hallucis brevis tendon beneath the 1st metatarsal head. They function as pulleys for the FHB and absorb significant compressive load with every push-off step. Sesamoiditis refers to inflammation of the sesamoid-tendon complex — distinct from sesamoid stress fracture, acute fracture, bipartite sesamoid (normal anatomic variant), and avascular necrosis. At Balance Foot & Ankle PLLC, Dr. Tom Biernacki accurately differentiates sesamoid pathologies and provides targeted treatment for each condition.
Diagnosis: Distinguishing Sesamoid Pathologies
Sesamoiditis: Gradual onset, bilateral comparison tenderness, no fracture line on imaging. Sesamoid Stress Fracture: Focal tenderness, often with insidious onset in runners or dancers. MRI shows bone marrow edema before X-ray changes. Bipartite Sesamoid: Normal variant in 10–30% of patients — rounded, corticated margins on X-ray distinguish from fracture (fracture has irregular, non-corticated margins). MRI confirms whether bipartite sesamoid is symptomatic. Avascular Necrosis: Fragmentation and sclerosis on X-ray, low T1 signal on MRI — occurs with repetitive overload or corticosteroid injection. Acute Fracture: Traumatic onset, transverse fracture line.
Conservative Treatment
Sesamoid offloading orthotic: J-shaped dancer’s pad or sesamoid relief cut-out — removes pressure from the sesamoid during gait. Stiff-soled shoe or carbon fiber Morton’s extension plate to minimize 1st MTP flexion during push-off. Activity modification: eliminate barefoot walking, high heels, and push-off activities. Sesamoid stress fracture: 6–8 weeks non-weightbearing in a boot or total contact cast — sesamoids are notoriously slow to heal due to poor blood supply. Ultrasound-guided corticosteroid injection for sesamoiditis — limited to 1–2 injections due to AVN risk with repeat injection.
Surgical Options
Sesamoidectomy (partial or complete): reserved for sesamoid stress fracture with non-union, AVN, or refractory sesamoiditis failing conservative care. Partial sesamoidectomy preferred — removes the pathological portion while preserving remaining bone and tendon function. Complete sesamoidectomy risks hallux valgus (tibial sesamoid removal) or hallux varus (fibular sesamoid removal) deformity. Recovery: 6–8 weeks protected weightbearing, 3–4 months return to full activity.
Dr. Tom's Product Recommendations
Pedag Dancer’s Pad Sesamoid Relief
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Dancer’s pad with sesamoid cut-out — specifically designed to offload the 1st metatarsal sesamoid bones. Essential conservative treatment for sesamoiditis and sesamoid stress fracture.
Dr. Tom says: “My podiatrist had me use a dancer’s pad like this and it immediately reduced my sesamoid pain during walking.”
Sesamoiditis offloading, sesamoid stress fracture, 1st MTP forefoot pain, dancer’s foot
Positioning is critical — place with the notch directly under the painful sesamoid
Disclosure: We earn a commission at no extra cost to you.
Pedag Carbon Fiber Insole
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Rigid carbon fiber plate — minimizes 1st MTP dorsiflexion and push-off sesamoid loading. Used as a conservative measure for sesamoiditis and sesamoid stress fractures.
Dr. Tom says: “This carbon plate prevented the push-off motion that was aggravating my sesamoid and allowed me to walk without constant forefoot pain.”
Sesamoiditis push-off reduction, hallux rigidus, forefoot pain push-off motion reduction
Rigid device — requires stiff-sole shoe to function optimally
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- Accurate imaging distinguishes sesamoiditis, stress fracture, bipartite sesamoid, and AVN
- Sesamoid offloading orthotic provides rapid symptom relief for most cases
- Sesamoidectomy provides reliable relief for non-union and AVN when conservative care fails
- Partial sesamoidectomy preferred to preserve hallux alignment
❌ Cons / Risks
- Sesamoid stress fractures have prolonged healing — 3-6 months non-weightbearing often required
- Complete sesamoidectomy risks hallux deformity — partial resection is preferred
- Corticosteroid injection limited to 1-2 injections due to AVN risk
Dr. Tom Biernacki’s Recommendation
Sesamoid problems are tricky because the diagnosis really matters — sesamoiditis, stress fracture, bipartite sesamoid, and AVN all look similar clinically but need different treatment. I always get weight-bearing X-rays and usually MRI to characterize the sesamoid properly before committing to a treatment plan. The dancer’s pad offloading is remarkably effective for sesamoiditis when applied correctly, and genuine stress fractures need protected weightbearing for months — not just a pad.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
What is sesamoiditis and how does it feel?
Sesamoiditis is inflammation of the sesamoid bones and surrounding tendon under the big toe. It causes pain specifically under the 1st metatarsal head — the ball of the foot at the big toe — that worsens with push-off, barefoot walking, high heels, and toe-up positions. The area is exquisitely tender to direct pressure from beneath. Sesamoiditis is distinct from generalized metatarsalgia — the pain is precisely localized under the sesamoids.
How long does sesamoiditis take to heal?
Mild sesamoiditis with consistent offloading (dancer’s pad, carbon plate, activity modification) typically improves over 4–8 weeks. Sesamoid stress fractures are significantly slower — 3–6 months of protected weightbearing is commonly required due to the poor vascular supply. Avascular necrosis has variable outcomes — some cases stabilize with protection; others require sesamoidectomy. Prognosis depends entirely on accurate diagnosis.
Is my sesamoid broken or just inflamed?
Only imaging can reliably distinguish these. Bipartite sesamoid (normal variant) is identified by smooth, corticated borders on X-ray. Stress fracture shows irregular, non-corticated fracture line. MRI demonstrates bone marrow edema in stress fractures and sesamoiditis, and low T1 signal in AVN. Dr. Biernacki reviews imaging precisely because the treatment differs substantially based on diagnosis.
Can I keep running with sesamoiditis?
In mild sesamoiditis, modified running with offloading (dancer’s pad + carbon plate) may be possible in the short term. Running on a sesamoid stress fracture risks fracture propagation and non-union — not advisable without physician guidance. The clinical presentation matters: gradual onset, mild tenderness, no MRI edema suggests it may be manageable with modification. Fracture with MRI edema requires strict rest.
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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.
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Dr. Tom Biernacki, DPM is a double board-certified podiatrist and foot & ankle surgeon at Balance Foot & Ankle Specialists in Southeast Michigan. With over a decade of clinical experience, he specializes in heel pain, bunions, diabetic foot care, sports injuries, and minimally invasive surgery. Dr. Biernacki is a member of the APMA and ACFAS, and his patient education content on MichiganFootDoctors.com and YouTube has reached over one million views.
Related reading: Plantar Fasciitis Secrets — our complete heel pain guide: what works and what to avoid.
- Plantar Fasciitis: Diagnosis and Conservative Management (PubMed)
- Plantar Fasciitis (APMA)
- Diagnosis and Treatment of Plantar Fasciitis (PubMed / AAFP)
- Heel Pain (APMA)
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