Talus Fracture (Ankle Bone)

Description

The talus is the bone that sits between the shin and the heel and forms the lower half of the ankle joint. A talus fracture is uncommon, usually from a significant force such as a fall from a height or a hard landing.

How it happens (the mechanism)

A high force drives the foot against the shin and breaks the talus. The talus is unusual in two ways: no muscles attach to it, and its blood supply enters from only a few points and partly runs “backward” into the bone. So a larger, displaced fracture can interrupt the circulation to part of the talus — which is why bigger breaks are realigned promptly and followed for signs of healing, while smaller, well-aligned ones are generally straightforward.

Symptoms

A painful, swollen ankle and hindfoot after a hard impact, with difficulty bearing weight.

Doctor examination and imaging

The doctor examines the ankle and foot; X-rays show the fracture and a CT is often used to define larger breaks.

Treatment

A non-displaced fracture is treated in a cast, often with a period of staying off the foot. A displaced fracture is usually realigned and held with screws to restore the joint and protect the blood supply. Larger breaks are followed with X-rays over time.

Recovery and long-term outlook

Smaller, well-aligned breaks heal well. Larger breaks are followed carefully for healing and the health of the bone.

When to call the doctor

Call the office right away if your child’s toes become numb, pale, blue, or cold; pain keeps worsening even after raising the leg and giving medicine; swelling does not improve with elevation; the cast feels too tight, cracked, or wet, or smells bad; or your child develops a fever.

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.