Anatomy & Body Systems
- Location: Under first MTP joint (two bones: medial and lateral)
- Function: Protect tendons, act as pulley
- Embedded in: Flexor hallucis brevis tendons
- Blood supply: Limited, slow healing
- With each step, sesamoids bear significant force
- Important for push-off during walking/running
- Absorb impact forces
- Allow smooth tendon function
Causes & Root Factors
- Repetitive impact activities
- Dancing (especially pointe work)
- Running
- High-impact sports
- High heels
- Tight footwear
- Foot structure (high arches)
- Direct trauma
- Repetitive stress
- Poor footwear
- Training errors
Risk Factors
- Dancing: Ballet especially
- Running: Especially on hard surfaces
- Sports: Basketball, tennis
- High arches (pes cavus)
- Prominent metatarsal heads
- Bunion (hallux valgus)
- High heels
- Tight toe boxes
- Poor support
Signs & Characteristics
- Pain under big toe joint
- Pain with walking, especially push-off
- Pain with bending big toe
- Swelling
- Bruising (sometimes)
- Difficulty wearing shoes
- Gradual onset
- Worsens with activity
- Improves with rest
- Often bilateral but may be one side
Differential Diagnosis
- Sesamoid fracture: Acute onset, more severe pain
- Metatarsalgia: Different location
- Gout: Acute attacks, different presentation
- Morton's neuroma: Different location, tingling
- Bunion: Different location
Conventional Treatments
- Reduce painful activities
- Cross-train
- Rest the foot
- Ice
- NSAIDs
- Padding
- Supportive shoes
- Low heels
- Orthotics
- Corticosteroid injection
- For severe inflammation
- Rarely needed
- For chronic, refractory cases
- Sesamoid removal
Integrative Treatments
- Arnica: For trauma/inflammation
- Rhus toxicodendron: For stiffness
- Bryonia: For pain worse with movement
- Reduce pain
- Improve function
- Address contributing factors
- Stretching
- Strengthening
- Gait training
- Footwear guidance
Self Care
- Rest from painful activities
- Ice after activity
- Avoid tight shoes
- Supportive shoes
- Avoid high heels
- Consider orthotics
- Metatarsal pads
- Sesamoid pads
- Felt padding
Prevention
- Proper fit
- Supportive
- Appropriate for activity
- Gradual training increases
- Proper technique
- Adequate recovery
- Good orthotics if needed
- Regular stretching
When to Seek Help
- Persistent forefoot pain
- Pain affecting activities
- Swelling
- Difficulty walking
Red Flags
- Severe, sudden pain
- Significant swelling
- Unable to bear weight
Prognosis
- Most improve in 4-8 weeks
- Good prognosis
- Most return to full activity
FAQ
They're small, rounded bones embedded in tendons. The foot has two sesamoids under the big toe joint.
Fracture usually causes sudden, severe pain after trauma. Sesamoiditis is gradual onset from overuse. Imaging can differentiate.
Modify activities during recovery. Most can return gradually with proper treatment.
Yes, high heels and tight shoes increase pressure on the sesamoids.