Cuboid Fracture (Midfoot)

Description

This is a break of the cuboid, one of the small bones on the outer side of the midfoot. These are often subtle injuries from a twist or a fall.

How it happens (the mechanism)

During a twisting injury, the cuboid can be squeezed between the heel bone behind it and the outer foot bones in front of it — the so-called nutcracker mechanism — producing a compression crack. Most of these are minor and heal predictably with protection.

Symptoms

Pain, tenderness, and swelling on the outer middle of the foot, worse with walking.

Doctor examination and imaging

The doctor localizes the tenderness; X-rays show the fracture, though subtle ones may be treated on the basis of the exam and confirmed on later imaging.

Treatment

Most are treated simply with a cast or stiff walking boot for a few weeks, with weight-bearing as comfort allows. Surgery is rarely needed.

Recovery and long-term outlook

Most cuboid fractures in children are mild and heal well, with full recovery the rule.

When to call the doctor

Call if pain is severe or worsening, your child will not bear weight or use the leg at all, the area becomes very swollen, red, or warm, your child develops a fever, or things are not improving with rest as expected.

Learn more

OrthoInfo (AAOS) — Growth Plate Fractures: orthoinfo.aaos.org

This information is for educational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. For specific concerns about your child, consult a board-certified, fellowship-trained pediatric orthopaedic surgeon.