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 Big Toe 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 | X-ray Finding | MRI Finding | Pain Location | Key Distinguisher |
|---|---|---|---|---|
| Sesamoiditis (Stress / Overuse) | Normal bone; no fracture line (bipartite may be present as normal variant) | Bone marrow edema within sesamoid; intact cortex | Plantar first MTP; medial sesamoid most common (larger, more weight-bearing) | Gradual onset; no acute trauma; worse with push-off; improves with rest |
| Acute Sesamoid Fracture | Fracture line — smooth, irregular edges (vs bipartite: smooth, rounded edges) | Fracture line with marrow edema; possible displacement | Plantar first MTP; acute onset with specific incident | Traumatic onset; fall on forefoot; forced dorsiflexion; acute severe pain |
| Bipartite Sesamoid (Normal Variant) | Two smooth, rounded fragments; bilateral in 85%; symmetric edges | No edema if asymptomatic | Incidental; only symptomatic if traumatized | Bilateral on X-ray; smooth rounded edges; no fracture characteristics |
| Sesamoid Avascular Necrosis (AVN) | Sclerosis; fragmentation; collapse of sesamoid | Loss of signal; fragmentation; no vascular enhancement | Chronic plantar first MTP pain; history of prior fracture or steroid injection | History of fracture or repeated steroid injection; X-ray sclerosis |
| Turf Toe (Plantar Plate Injury) | May show sesamoid diastasis or fracture in Grade III | Plantar plate tear; sesamoid retraction; capsular disruption | Dorsal and plantar first MTP; hyperextension mechanism | Mechanism: forced dorsiflexion during athletic activity; push-off deficit |
| Treatment | Indication | Protocol | Expected Outcome | Recovery |
|---|---|---|---|---|
| Dancer’s Pad / Sesamoid Offloading Pad | Sesamoiditis; stress fracture; all grades of injury | U-shaped felt/foam pad redistributes weight off sesamoid; worn full-time | Significant pain relief in most cases within 2–4 weeks | Immediate; use through healing |
| Custom Orthotic with Sesamoid Cutout | Chronic sesamoiditis; bipartite sesamoid; post-fracture | Custom orthotic with metatarsal bar and sesamoid relief channel | 60–75% long-term pain management | Ongoing; may be definitive for mild-moderate sesamoiditis |
| Carbon Fiber Turf Toe Plate | Athletes; limits first MTP dorsiflexion during sport | Rigid insert limits MTP extension to <20°; worn in shoe during activity | Allows continued athletic participation with minimal pain | Immediate for activity; use through healing phase |
| Non-Weight-Bearing Cast / Boot | Acute fracture; severe sesamoiditis; stress fracture with significant edema on MRI | NWB short leg cast or boot × 6–8 weeks; then dancer’s pad + gradual return | 85% healing for acute non-displaced fractures with adequate rest | 6–8 weeks NWB; 3–6 months return to sport |
| Partial Sesamoidectomy | Failed 6+ months conservative care; AVN; chronic non-union; persistent pain | Excision of affected sesamoid (usually medial); preserve flexor hallucis brevis attachment | 75–85% pain relief; maintaining push-off function is critical surgical goal | 4–6 weeks NWB; 3–4 months return to sport |
Watch: BEST Broken Ankle Fracture & Sprained Ankle Recovery TIPS [Top 25] — MichiganFootDoctors YouTube
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Medically Reviewed | Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle, Michigan
Quick Answer:
Quick Answer: Sesamoiditis is inflammation of the sesamoid bones beneath the first metatarsophalangeal joint, causing plantar forefoot pain with push-off and kneeling. Sesamoid fractures can be traumatic or stress fractures. Conservative care includes padding, orthotics, and activity modification. Avascular necrosis of the sesamoid may require sesamoidectomy. Tibial sesamoid is at higher risk for AVN due to limited blood supply. MRI distinguishes sesamoiditis from fracture, AVN, and osteomyelitis.
Pain beneath the big toe — specifically at the ball of the foot, on the plantar surface of the first metatarsophalangeal joint — is one of the most functionally disabling conditions in the forefoot. The sesamoid bones (two small bones embedded in the flexor hallucis brevis tendons beneath the first MTP joint) are essential to normal big toe function, yet they are susceptible to a spectrum of pathology: sesamoiditis (inflammation), stress fractures, acute fractures, bipartite sesamoid fractures, and avascular necrosis. At Balance Foot & Ankle PLLC, Dr. Tom Biernacki precisely characterizes sesamoid pathology and delivers targeted treatment to restore pain-free first MTP function.
Sesamoid Anatomy and Function
The two sesamoid bones — the tibial (medial) sesamoid and the fibular (lateral) sesamoid — are embedded within the flexor hallucis brevis tendon on the plantar surface of the 1st MTP joint. They act as a pulley system for the FHB, increase the mechanical advantage of big toe push-off, and protect the flexor hallucis longus tendon as it passes between them. The tibial sesamoid bears greater loads and has a more tenuous blood supply — making it the more frequently injured and problematic of the two.
Differentiating Sesamoid Conditions
Sesamoiditis: Chronic overload-related inflammation of the sesamoid and surrounding periosteum. Diffuse plantar 1st MTP tenderness, worse with push-off and kneeling. X-rays normal or show minimal changes. MRI shows bone marrow edema without fracture line.
Bipartite sesamoid: Developmental variant (present in 10–30%) where the tibial sesamoid has two separate ossicles. Distinguishing a bipartite sesamoid from a fracture: bipartite sesamoids have smooth, rounded, corticated edges; fractures have irregular, sharp edges. Bone scintigraphy and MRI differentiate symptomatic bipartite from fracture — both can cause pain.
Stress fracture: Linear fracture line through the sesamoid from repetitive loading. MRI shows incomplete or complete fracture line with surrounding edema. Occurs in dancers, runners, and jumping athletes. High non-union risk if continued weight-bearing.
Avascular necrosis (AVN): Loss of blood supply to the sesamoid (most commonly tibial sesamoid) causing bone death and collapse. MRI shows low T1 signal throughout the sesamoid — the most reliable imaging finding. Chronic, refractory pain unresponsive to conservative treatment. Often requires sesamoidectomy for definitive relief.
Conservative Treatment Protocol
Sesamoid offloading pad (J-shaped pad or dancer’s pad) proximal to the sesamoid reduces direct plantar pressure on the affected bone. Custom orthotics with sesamoid cutout redistribute MTP loading. Carbon fiber insole limits first MTP dorsiflexion (reducing sesamoid compressive stress during push-off). Activity modification: reducing or eliminating high-impact and high-heel activities. Immobilization boot for 4–6 weeks for acute sesamoid fractures or severe sesamoiditis flares. Duration: 3–6 months of conservative care before surgical consideration.
Sesamoidectomy
Sesamoidectomy — surgical removal of the affected sesamoid — is indicated for: confirmed sesamoid AVN, non-union sesamoid stress fracture, and refractory sesamoiditis unresponsive to 3–6 months of conservative treatment. Only the affected sesamoid is removed (not both). Tibial sesamoidectomy carries a risk of hallux valgus deformity from loss of the medial stabilizing force; fibular sesamoidectomy carries a smaller risk of hallux varus. Postoperatively: protected weight-bearing in a stiff-soled shoe for 3–4 weeks; return to regular shoes at 6–8 weeks. Published success rates: 80–90% for AVN sesamoidectomy.
Dr. Tom's Product Recommendations
J-Pad Sesamoid Offloading Pad
⭐ Highly Rated | Foundation Wellness Partner | 30% Commission
Adhesive J-shaped offloading pad that surrounds the sesamoid, reducing direct plantar pressure on the tibial or fibular sesamoid. First-line conservative device for sesamoiditis management.
Dr. Tom says: “The J-pad completely changed my ability to walk without sesamoid pain — I wore it for 6 months during my conservative treatment.”
Sesamoiditis, sesamoid stress fracture conservative management, plantar 1st MTP pain
Sesamoid AVN — requires medical evaluation and potential sesamoidectomy
Disclosure: We earn a commission at no extra cost to you.
Carbon Fiber Insole to Limit 1st MTP Dorsiflexion
⭐ Highly Rated | Foundation Wellness Partner | 30% Commission
Rigid carbon fiber insole that limits first MTP dorsiflexion to reduce compressive sesamoid loading during push-off. Essential for dancers and runners with sesamoiditis.
Dr. Tom says: “Dr. Biernacki prescribed this rigid insole for my sesamoid stress fracture — enabled me to walk without pain during healing.”
Sesamoiditis, sesamoid stress fracture, turf toe, first MTP pain
Not for unrestricted use during active sesamoid fractures — combine with boot per Dr. Biernacki
Disclosure: We earn a commission at no extra cost to you.
✅ Pros / Benefits
- Conservative care with J-padding and orthotic offloading resolves sesamoiditis in 70–80% of cases
- Sesamoidectomy achieves 80–90% success for sesamoid AVN and non-union fractures
- MRI precisely distinguishes sesamoiditis, fracture, and AVN to guide targeted treatment
❌ Cons / Risks
- Sesamoid AVN rarely responds to conservative care — sesamoidectomy is usually needed
- Tibial sesamoidectomy carries hallux valgus risk from loss of medial stabilizing force
- Sesamoid stress fractures have high non-union risk if weight-bearing continues without offloading
Dr. Tom Biernacki’s Recommendation
Sesamoid pathology is underdiagnosed and undertreated. When a dancer or runner comes to me with plantar 1st MTP pain and an X-ray showing ‘two-part tibial sesamoid,’ the first question is: is this a bipartite variant or a fracture? Smooth corticated edges on X-ray with a classic bipartite pattern may still need an MRI to confirm — symptomatic bipartites can be just as painful as fractures and may need sesamoidectomy if truly causing symptoms. For confirmed AVN, I don’t try to salvage the sesamoid — sesamoidectomy is the right call, and patients do well.
— Dr. Tom Biernacki, DPM | Board-Certified Podiatric Surgeon | Balance Foot & Ankle
Frequently Asked Questions
What is sesamoiditis?
Sesamoiditis is inflammation of one or both sesamoid bones beneath the first metatarsophalangeal (MTP) joint at the ball of the big toe. It causes plantar forefoot pain that is worst during push-off activities like running, dancing, and kneeling. MRI shows bone marrow edema without fracture line. Conservative treatment with sesamoid offloading pads, orthotics, and activity modification resolves symptoms in the majority of cases.
How do you tell if a sesamoid is fractured or bipartite?
Radiographic appearance is key: bipartite sesamoids have two well-corticated (smooth, rounded) ossicles with similar size, while sesamoid fractures have irregular, non-corticated edges. However, symptomatic bipartite sesamoids can look like fractures on X-ray. MRI distinguishes them definitively: fractures show bone marrow edema and a fracture line; bipartite sesamoids show edema only if symptomatic. Bone scintigraphy can also differentiate based on uptake patterns.
Does sesamoiditis require surgery?
Sesamoiditis without fracture or AVN responds to conservative treatment in 70–80% of cases: J-pad offloading, custom orthotics, activity modification, and immobilization for acute flares. Surgery (sesamoidectomy) is indicated for: sesamoid avascular necrosis, non-union sesamoid fracture, and refractory sesamoiditis unresponsive to 3–6 months of conservative care. Sesamoidectomy has 80–90% success rates for the appropriate indications.
Can dancers perform after sesamoidectomy?
Many dancers return to full dance activity after sesamoidectomy, though outcomes depend on which sesamoid is removed and the specific dance discipline. Tibial sesamoidectomy reduces FHB mechanical advantage and may affect relevé height; most dancers compensate with proper rehabilitation. Fibular sesamoidectomy has less impact on dance mechanics. Dr. Biernacki discusses realistic activity expectations for dancers considering sesamoidectomy on an individualized basis.
Michigan Foot Pain? See Dr. Biernacki In Person
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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.
In-Office Treatment at Balance Foot & Ankle
If home treatment isn’t providing relief for your sesamoiditis, our podiatry team at Balance Foot & Ankle can help with same-day evaluations and advanced in-office care.
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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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