Overview
what it is and why it mattersMetatarsal stress fractures are the most common stress fractures in the foot. They show up as a hairline crack in one of the long bones of the forefoot — most often the second or third bone behind the toes — from too much repetitive impact, too quickly. The classic patients are runners ramping up mileage and military recruits (which is why these fractures used to be called march fractures). The fifth metatarsal — behind the pinky toe — is a special case with very different healing biology, covered on the Jones fracture page. The biggest risk factors are a sudden increase in training, low bone density, and foot mechanics that concentrate force on one bone (high-arched feet, leg-length difference).
Symptoms
what you may notice- Forefoot pain that builds with activity. Aching over the top of the foot during a run or march that eases when you stop — and comes back sooner the next time.
- Pinpoint tenderness over one bone. Pressing directly on the affected metatarsal reproduces the pain precisely — not a diffuse ache across the whole forefoot.
- Swelling on top of the foot. Mild puffiness develops over the fracture site, sometimes visible, sometimes only palpable.
- Pain with the single-leg hop test. Hopping on the affected foot reproduces the pain — a quick screen your provider may use in clinic.
Diagnosis
exam first, imaging secondPlain X-rays often look normal early on — the bone hasn't yet remodeled enough for the crack to show. MRI is the most sensitive early test — it shows fluid in the bone before any actual crack is visible. A bone scan can also pick it up. Clinically, the diagnosis is suspected when there's pinpoint tenderness directly over a single bone in the forefoot that worsens with activity.
Treatment Path
how care progresses at OSIActivity modification
Stop the activity that caused the fracture. Low-impact cross-training (swimming, cycling) is actively encouraged so you don't lose conditioning while the bone heals.
Stiff-soled shoe or walking boot
A stiff-soled post-op shoe or walking boot keeps the foot from flexing and bending the affected bone every step — the protection lets it heal.
Bone health optimization
Make sure you're getting adequate calcium and vitamin D. If a stress fracture seems out of proportion to the activity, your surgeon may order a bone density scan to check for underlying weakness.
Surgical Options at OSI
if non-operative care isn't enoughThe vast majority of these heal without surgery. Surgery is rare — reserved for fractures that have shifted significantly or for stress fractures that haven't healed despite a real period of protected weight-bearing.
Further Reading
authoritative sourcesExternal patient-education references and related OSI pages for additional background: