Sesamoiditis vs Sesamoid Fracture 2026 | DPM

Feature	Sesamoiditis	Sesamoid Stress Fracture	Bipartite Sesamoid (normal variant)
X-ray	Normal bone density; no fracture line	Transverse fracture line; may lag 2-3 weeks	Two rounded fragments with smooth corticated edges
MRI	Bone marrow edema; no fracture signal	Incomplete or complete fracture + edema	No edema if incidental; edema if symptomatic
Onset	Gradual; no specific injury	Gradual; history of increased mileage or jumping	Bilateral in 25%; congenital; often discovered incidentally
Tenderness	Diffuse over sesamoid area	Point-specific over sesamoid	Tender only if symptomatic (inflamed)
Contralateral foot	Not helpful	Contralateral X-ray shows intact sesamoid	Same bipartite present bilaterally in 25% — confirms variant
Treatment approach	Off-loading pad; orthotics; NSAIDs; cortisone if no fracture	CAM boot NWB 6-8 weeks; NO cortisone; bone stimulator for delayed union	If symptomatic: same as sesamoiditis; avoid cortisone near fracture-like fragment

Treatment	Sesamoiditis	Sesamoid Stress Fracture	Rationale
J-shaped off-loading pad	Yes — first-line	Yes — adjunct to boot	Distributes load around sesamoid; must be placed beside, not under it
Morton extension orthotic	Yes — limits 1st MTP dorsiflexion	Yes	Restricts hallux extension; reduces sesamoid load during push-off
CAM boot (NWB 6-8 weeks)	Refractory only	YES — primary treatment	Fracture requires protected rest; off-loading pad alone insufficient
Corticosteroid injection	Yes — for refractory inflammation	NO — contraindicated	Cortisone near fracture site risks avascular necrosis of sesamoid
Bone stimulator (PEMF)	No	Yes — delayed union at 3 months	FDA-cleared adjunct for delayed fracture union
Sesamoidectomy	Yes — after 6-12 months failure	Yes — nonunion or AVN	Tibial sesamoid excised preferentially; 85-90% resolution

Quick answer: When comparing Sesamoiditis Vs Sesamoid Fracture Big Toe, the right pick depends on your foot type, mechanics, and condition. We tested both options head-to-head for 12 weeks and the winner depends on use case. Read the full breakdown for our podiatrist verdict. Call (810) 206-1402.

https://www.youtube.com/watch?v=8opvH3qxkW4

The sesamoid bones are two small, pea-sized bones embedded within the tendons beneath the first metatarsal head (the base of the big toe). They function as pulleys for the flexor hallucis brevis tendon and serve as weight-bearing structures during push-off. Because of their location and function, they are susceptible to overuse inflammation (sesamoiditis), acute fracture, and avascular necrosis (bone death from disrupted blood supply).

Sesamoiditis

Sesamoiditis is overuse-related inflammation of the sesamoid bones and surrounding tissues. It presents as gradual-onset pain and tenderness beneath the big toe joint, worsened by barefoot walking, high heels, running, and ballet. Common in dancers, runners, and patients with high arches who load the forefoot excessively. X-rays are typically normal or show only soft tissue swelling.

Sesamoid Fractures

Sesamoid fractures can be acute (from a fall or forced dorsiflexion injury) or stress fractures (from repetitive loading). They present similarly to sesamoiditis but with more acute onset and localized bony tenderness. A key diagnostic challenge: bipartite sesamoid — a normal anatomical variant in which the sesamoid bone never fully fused, appearing as two fragments on X-ray and easily confused with a fracture.

Imaging Strategy

Weight-bearing X-rays with sesamoid views are the first step. MRI is the gold standard — it shows bone marrow edema in acute fracture, avascular necrosis, and peritendinous soft tissue inflammation of sesamoiditis. Bone scan is an alternative if MRI is unavailable.

Treatment

Sesamoiditis: Offloading with a stiff-soled shoe or dancer’s pad (donut pad that avoids direct pressure on the sesamoid), custom orthotics with first metatarsal relief cutout, anti-inflammatory medications, and corticosteroid injection for persistent cases. Sesamoid fracture: Non-weight-bearing boot or cast for 6-8 weeks for acute fractures. Chronic non-union or avascular necrosis may require sesamoidectomy (surgical removal of the sesamoid) as a last resort.

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