What Are Foot and Ankle Stress Fractures?

A stress fracture is a small crack in a bone that develops due to repetitive load or overuse. Unlike a sudden traumatic fracture, stress fractures occur gradually when the bone is repeatedly exposed to forces that exceed its ability to repair itself.

In the foot and ankle, stress fractures most commonly occur in the metatarsals (long bones of the forefoot), but they can also affect other bones such as the heel bone, navicular, talus and ankle bones.

These injuries are particularly common in runners, athletes and people who have suddenly increased their activity levels.

However, stress fractures can also occur in individuals with underlying bone weakness or biomechanical problems affecting the foot.

Early diagnosis and appropriate management are important, as continuing to exercise on a stress fracture can lead to worsening injury and longer recovery times.

Types of Foot and Ankle Stress Fractures

Stress fractures can occur in several different bones in the foot and ankle.

Some are considered low-risk and tend to heal well with rest, while others are high-risk and may require more careful management or surgical treatment.

Metatarsal Stress Fractures

These are the most common type of stress fracture in the foot. The second and third metatarsals are most frequently affected as they bear a large amount of load during walking and running.

Symptoms often include forefoot pain that worsens with activity and settles with rest.

Fifth Metatarsal Stress Fracture

Stress fractures in the base of the fifth metatarsal (outer edge of the foot) are sometimes referred to as Jones fractures. These can be slower to heal because of the limited blood supply in this area.

In athletes, surgical fixation is sometimes recommended to improve healing and allow a quicker return to sport.

Navicular Stress Fracture

The navicular bone sits in the middle of the foot and plays a key role in transferring forces during running and jumping.

Stress fractures in this bone are considered high-risk because they can be difficult to detect early and may heal slowly.

Athletes involved in running and jumping sports are particularly at risk.

Calcaneal (Heel Bone) Stress Fracture

The calcaneus is the large bone forming the heel. Stress fractures here are often seen in people who have rapidly increased their walking or running activity.

Symptoms usually include deep heel pain that worsens with weight bearing.

Talus Stress Fracture

Stress fractures of the talus, the bone connecting the foot and ankle, are less common but can occur in athletes exposed to repeated impact or jumping activities.

Because this bone has a limited blood supply, careful management is important.

Who Gets Foot and Ankle Stress Fractures?

Stress fractures can occur in anyone but are more common in individuals who place repeated stress on their feet.

They are frequently seen in:

• Runners and endurance athletes
• Military recruits during intense training
• Dancers and gymnasts
• Football and rugby players
• People who suddenly increase exercise levels

They may also occur in people with underlying bone weakness or foot biomechanics that place excessive load on certain bones.

Predisposing Factors

A number of factors can increase the risk of developing a stress fracture in the foot or ankle.

Common risk factors include:

• Sudden increase in training intensity or distance
• Repetitive high-impact activities such as running or jumping
• Poor footwear or worn-out running shoes
• Foot structure abnormalities (high arches or flat feet)
• Muscle fatigue or weakness
• Reduced bone density
• Nutritional deficiencies, particularly low calcium or vitamin D
• Hormonal factors, including menstrual irregularities in female athletes

Often stress fractures occur when several of these factors combine.

Symptoms of a Stress Fracture

Symptoms usually develop gradually and may initially be mistaken for a minor soft tissue injury.

Common symptoms include:

• Localised pain in the foot or ankle during activity
• Pain that improves with rest but returns with exercise
• Tenderness when pressing on the affected area
• Mild swelling around the injury
• Pain that eventually occurs during normal walking

As the injury progresses, pain may become more constant and more severe.

Aggravating Factors

Stress fracture pain is typically worsened by activities that increase load through the affected bone.

Common aggravating factors include:

• Running or jumping
• Long walks or standing for prolonged periods
• Sudden increases in training volume
• Hard training surfaces
• Wearing unsupportive footwear

Continuing to exercise through pain may worsen the fracture.

Assessment

A specialist assessment is important if a stress fracture is suspected.

During your consultation at London Bridge Orthopaedics, your clinician will:

• Discuss your symptoms and activity levels
• Review recent changes in exercise or training
• Examine the foot and ankle for tenderness and swelling
• Assess foot alignment and biomechanics
• Evaluate walking and weight-bearing patterns

Identifying the exact location of the pain can provide important clues to the affected bone.

Diagnosis

Imaging is often required to confirm a stress fracture.

X-rays may be used initially but early stress fractures are not always visible.

If the diagnosis remains uncertain, more detailed imaging may be recommended, such as:

• MRI scan – highly sensitive for detecting early stress injuries
• CT scan – useful for assessing bone healing and fracture detail

MRI is often the preferred investigation because it can detect stress injuries before a fracture becomes visible on X-rays.

Conditions With Similar Symptoms (Differential Diagnosis)

Several other foot and ankle conditions can cause similar symptoms to stress fractures.

These include:

• Tendon injuries (such as tibialis posterior or peroneal tendon problems)
• Plantar fasciitis
• Bone bruising
• Arthritis of the foot joints
• Nerve irritation or entrapment
• Metatarsalgia

An accurate diagnosis ensures that the correct treatment plan is followed.

Non-Surgical (Conservative) Treatment

Many stress fractures heal successfully without surgery when diagnosed early and managed appropriately.

Treatment usually focuses on allowing the bone time to heal while reducing stress on the affected area.

This may include:

Activity modification

Temporary reduction or cessation of high-impact activities such as running or jumping.

Protective footwear or immobilisation

In some cases a protective boot or stiff-soled shoe may be used to reduce load through the injured bone.

Gradual return to activity

Once symptoms improve and the fracture shows signs of healing, activity levels are gradually increased.

Biomechanical assessment

Addressing foot mechanics with orthotics or footwear advice may reduce the risk of recurrence.

Recovery time varies depending on the bone involved but typically ranges from 6 to 12 weeks.

When Is Surgery Considered?

While many stress fractures heal with conservative treatment, surgery may be recommended in certain situations.

These include:

• High-risk stress fractures (such as navicular fractures)
• Fractures that fail to heal with non-surgical treatment
• Fractures that repeatedly recur
• Elite athletes requiring a more reliable and predictable return to sport

In these situations, surgical treatment can stabilise the bone and promote faster healing.

Surgical Treatment Options

Surgical treatment aims to stabilise the bone, encourage healing and allow a safe return to activity.

Internal Fixation

The most common surgical approach involves stabilising the fracture using small screws or specialised fixation devices.

This technique holds the bone securely while it heals and may allow earlier mobilisation.

It is commonly used for:

• Navicular stress fractures
• Fifth metatarsal stress fractures
• Certain ankle or talus stress fractures

Bone Grafting

If a fracture has not healed properly or has developed a delayed union, bone grafting may be used to stimulate healing.

Bone graft material helps promote new bone formation and can improve healing in difficult fractures.

Combined Procedures

In some cases, surgery may also address underlying biomechanical issues contributing to the stress fracture, helping to reduce the risk of recurrence.

Recovery After Treatment

Recovery depends on the type and location of the stress fracture as well as the treatment required.

Typical recovery stages include:

• Initial period of reduced weight bearing or protective footwear
• Gradual return to walking and low-impact exercise
• Progressive strengthening and rehabilitation
• Gradual return to sport

Athletes are usually guided through a structured return-to-sport programme to reduce the risk of reinjury.

Outcomes

Most foot and ankle stress fractures heal well with appropriate treatment.

With early diagnosis and proper management, patients can usually expect:

• Full healing of the bone
• Resolution of pain
• Return to normal daily activities
• Safe return to sport or exercise

High-risk stress fractures may require more careful management, but surgical treatment can provide excellent outcomes when needed.

Early recognition of symptoms and specialist assessment are key to ensuring the best possible recovery.

Frequently Asked Questions

How do I know if I have a stress fracture in my foot?

Stress fractures often cause pain that begins gradually and worsens with activity. The pain typically improves with rest but returns when you start exercising again. There is usually a specific tender area when pressing on the bone. If symptoms persist, a medical assessment and imaging may be needed to confirm the diagnosis.

How long does it take for a foot stress fracture to heal?

Most stress fractures heal within 6 to 12 weeks, although recovery can vary depending on the bone involved and the severity of the injury. High-risk stress fractures may take longer and require more careful management.

Can I walk on a stress fracture?

Some people can still walk with a stress fracture, but continuing normal activity may worsen the injury and delay healing. In many cases, reducing weight bearing or using a protective boot is recommended to allow the bone to recover.

Do stress fractures always require surgery?

No. Most foot and ankle stress fractures heal successfully with rest and activity modification. Surgery is usually reserved for high-risk fractures, fractures that do not heal with conservative treatment, or athletes who require a more reliable return to sport.

What happens if a stress fracture is left untreated?

If a stress fracture is ignored and activity continues, the small crack in the bone can worsen and develop into a complete fracture. This may require longer treatment or surgery and can significantly delay recovery.