- A stress fracture is a small crack in a bone caused by cumulative overload rather than a single traumatic injury.
- Common locations include the metatarsals, navicular, calcaneus, and the tibia (shin).
- Most stress fractures heal with 6–8 weeks of protected weight-bearing in a boot, plus a structured return-to-activity plan.
- High-risk stress fractures (navicular, base of 5th metatarsal, anterior tibia) need more aggressive treatment and sometimes surgery.
- Continuing to run through bone pain is the most common reason a stress fracture becomes a complete fracture.
What are stress fractures?
A stress fracture is a small crack or area of microdamage in a bone caused by repetitive overload — not by a single injury. Bone is constantly remodeling: with normal activity, the breakdown and rebuilding stay in balance. When the load exceeds the bone's capacity to rebuild — too many miles, too much intensity, too little recovery — microdamage accumulates faster than the bone can heal, and a stress fracture forms.
Stress fractures are most common in runners, military recruits, dancers, and anyone who rapidly increases activity. The most common locations in the foot are the second and third metatarsals (the long bones in the middle of the forefoot), followed by the navicular, calcaneus, sesamoids, and tibia. Some locations heal predictably with conservative care; others — the navicular, the base of the fifth metatarsal, and the anterior tibia — are "high-risk" stress fractures that need more aggressive management because they have a higher risk of non-union or complete fracture.
At Northwest Extremity Specialists, our approach to stress fractures starts with making the diagnosis quickly — many stress fractures don't show on initial X-rays, and a delayed diagnosis means weeks of continued damage. Our sports medicine team uses careful exam, on-site X-ray, and MRI when indicated to confirm the diagnosis. Treatment then matches the location and severity — most cases heal completely with 6–8 weeks of protected weight-bearing, while high-risk locations may require longer immobilization or surgical fixation.
See it in motion
Animations licensed from ViewMedica · Swarm Interactive
Bone remodels constantly in response to load. Osteoblasts build new bone, osteoclasts break down old bone, and the balance keeps the bone strong. When mechanical loading exceeds the rate of repair, microcracks accumulate. The most common foot location is the 2nd metatarsal because it is the longest and stiffest. The navicular is high-risk because its blood supply is poor in the middle of the bone. The base of the 5th metatarsal (Jones fracture zone) is high-risk because it sits at a watershed of blood supply.
What it feels like
Stress fractures have a recognizable pattern that gradually worsens:
- Pain that gradually worsens over weeks of training rather than starting suddenly
- Pinpoint tenderness over a specific spot on the bone
- Pain that's worse during and immediately after activity
- Mild swelling at the painful area
- Pain that progresses to occurring during walking, not just running
- Inability to hop on the affected leg
- Pain at night in advanced cases
- A history of recently increased mileage, intensity, or training surface
Why it develops
Stress fractures result from a mismatch between mechanical loading and bone's ability to remodel:
- Sudden increase in running mileage, pace, or hill work (most common)
- New activity for which the bones aren't prepared (military basic training is the classic example)
- Hard training surfaces (concrete, pavement, hard tracks)
- Inadequate footwear or change in footwear
- Low energy availability (under-fueling, common in endurance athletes)
- Female athlete triad — low energy + menstrual disturbance + low bone density
- Osteoporosis or low bone density in older patients
- High-arched or rigid feet that don't absorb shock well
How we diagnose stress fractures
The diagnosis of a stress fracture often takes more than one imaging study. On-site digital X-ray is taken first, but stress fractures may not show on X-ray for 2–6 weeks after symptoms start. If clinical suspicion is high and X-rays are negative, MRI is the gold-standard test — it can detect a stress reaction (the early phase) before a fracture line is visible. CT scan is used for some specific locations. A thorough first visit includes pinpoint palpation, hop test, and assessment of training history. Most patients leave the same day with either a confirmed diagnosis or a plan for advanced imaging.
Non-surgical care
Most stress fractures heal completely with the right plan — but the plan is not just "rest." It is structured offloading followed by a graduated return to activity:
- Protected weight-bearing in a walking boot for 6–8 weeks (most common stress fractures)
- Non-weight-bearing on crutches for 6–8 weeks for high-risk locations (navicular, anterior tibia)
- Cross-training to maintain fitness — cycling, swimming, pool running
- Addressing the underlying cause: nutrition, training load, footwear, foot mechanics
- Bone health workup if multiple stress fractures or risk factors are present
- Custom orthotics for foot-type contributors
- Calcium and vitamin D optimization
- Structured return-to-running program (typically 4–6 weeks of progressive volume)
Surgical care
Surgery is reserved for high-risk stress fractures, non-healing fractures, and certain locations (notably the Jones fracture at the base of the 5th metatarsal in athletes) where surgical fixation provides faster, more predictable healing.
- Percutaneous screw fixation for Jones fractures and high-risk stress fractures
- Open reduction and internal fixation for displaced or non-healing stress fractures
- Bone grafting for non-union cases
After surgical fixation, most patients are in a boot for 2–4 weeks, transitioning to athletic shoes by 6–8 weeks, with return to running 3–4 months post-op and return to sport at 4–6 months. Outcomes are excellent and recurrence is uncommon when the underlying cause is also addressed.
When to see a specialist
- Foot, ankle, or shin pain that has gradually worsened over weeks of training
- Pinpoint bone tenderness in a specific spot
- Pain that's started occurring during walking, not just running
- Recently increased mileage, intensity, or change in shoes
- Bone pain plus a history of disordered eating, menstrual irregularity, or prior stress fractures
Stress fractures are evaluated by our sports medicine team — Dr. Todd Galle in Tigard Oleson, Dr. Manny Moy in Milwaukie — and any of our board-certified podiatrists. High-risk stress fractures and surgical fixation are managed by Dr. Ron Bowman and our surgical podiatry team at Tigard Locust.