Midfoot Stress Fracture
What is a Midfoot Stress Fracture?
A stress fracture is a small crack in the bone caused by repetitive forces. Midfoot stress fractures commonly involve the metatarsals or navicular from overuse.
- Gradual onset of pain in the midfoot
- Often seen in runners or military recruits
Overview of the Condition
Insufficient rest, excessive training, or poor foot mechanics can lead to microtrauma accumulating over time. Early diagnosis is key to preventing complete fractures.
Symptoms
- Localized pain in the midfoot, worsening with activity
- Swelling and tenderness over the affected bone
- Pain that improves with rest
Causes
Repetitive impact from running or jumping, abrupt increase in training intensity, improper footwear, or biomechanical issues (like flat feet) can overload midfoot bones.
Diagnosis
X-rays may be normal early on; MRI or bone scan is more sensitive to detect stress fractures. Clinical suspicion is key when imaging is inconclusive.
Treatment Options
- Activity modification or cessation of impact sports
- Protective footwear or walking boot
- Crutches or non-weight-bearing in severe cases
- Gradual return to activity after healing
Conservative Management
Most stress fractures heal with rest, reduced weight-bearing, and adequate nutrition (calcium, vitamin D). Orthotics may correct underlying biomechanical factors.
Rehabilitation Exercises
- Progressive weight-bearing under medical guidance
- Low-impact cross-training (swimming, cycling)
- Foot strengthening and balance exercises upon recovery
When is Surgery Needed?
Surgery is rarely required but may be considered for fractures at high risk of nonunion (e.g., navicular) or when conservative measures fail.
Surgical Procedures
- Internal fixation with screws or pins
- Bone grafting if needed for persistent nonunion
- Immobilization and gradual rehab post-surgery
Anatomy Overview
The midfoot includes the navicular, cuboid, and cuneiforms, as well as the bases of the metatarsals. Stress fractures often occur in weight-bearing areas with repetitive loading.
Affected Areas
- Navicular bone (high risk for nonunion)
- 2nd and 3rd metatarsals (common in runners)
- Other midfoot bones under repetitive stress
Frequently Asked Questions
| Question | Answer |
|---|---|
| How long do stress fractures take to heal? | Typically 6-8 weeks with reduced or no weight-bearing, though some fractures require longer. |
| Can I keep running if the pain is tolerable? | Continuing high-impact activity risks worsening the fracture. Rest or switch to low-impact exercises until cleared. |
Prevention Strategies
- Gradually increase training intensity
- Use supportive, well-fitting footwear
- Ensure adequate bone health (diet, supplements)