Definition

A navicular fracture is a fracture of the navicular bone of the foot, a bone on the top of the midfoot. Athletes are particularly susceptible to fractures of the navicular bone. (There is also a navicular bone in the wrist.)

Navicular Bone of the Foot

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Causes

A navicular fracture can be caused by a fall, severe twist, or direct trauma to the navicular bone. It can also be caused by repeated stress to the foot, creating a fracture not due to any acute trauma (a stress fracture).

Risk Factors

A risk factor is something that increases your chance of getting a disease or condition.

The following factors may increase your risk of a navicular fracture:

• Trauma
• High-impact sports (eg, track and field, gymnastics, tennis, basketball)
• Being an adolescent
• In women, abnormal or absent menstrual cycles
• Military recruits
• Osteoporosis or other bone conditions

Symptoms

Symptoms of a navicular fracture include:

• Vague, aching pain in the top, middle portion of your foot, which may radiate along your arch
• Increasing pain with activity
• Pain on one foot only
• Altered gait
• Pain that resolves with rest
• Swelling of the foot
• Tenderness to touch on the inside aspect of the foot

Diagnosis

Your doctor will ask about your symptoms and medical history, and perform a physical exam, which will include a thorough examination of your foot. Other tests may include:

• X-ray —a test that uses radiation to take a picture of structures inside the body, especially bones
• Bone scan—a test that creates an image of the bones by using a low-dose radioactive substance injected into a vein
• CT scan —a type of x-ray that uses a computer to make pictures of structures inside the body
• MRI scan —a test that uses magnetic waves to make pictures of structures inside the body. This is particularly useful with stress fractures.

Treatment

Talk with your doctor about the best treatment plan for you. Treatment options include:

Prevention

To prevent navicular fractures and other fractures of the foot:

• Wear well-fitting, supportive shoes appropriate for the type of activity you are doing.
• Eat a diet rich in calcium and vitamin D.
• Do weight-bearing exercises to build strong bones.
• Build strong muscles and practice balancing exercises to prevent falls.