IMPORTANT: We currently have a number of bugs related to image cropping and are actively trying to resolve them. In the meantime, we have disabled cropping. Apologies for any inconvenience. Stay informed: radiopaedia.org/chat

Os calcaneus secundarius

Case contributed by Andrew Dixon
Diagnosis certain

Presentation

Hindfoot pain.

Patient Data

Age: 14 years
Gender: Female
ct

Os calcaneus secundarius (an accessory ossicle) is demonstrated with a pseudo-arthrosis between it and the anterior process of the calcaneus. The calcaneus secundarius articulates with the navicular.

This anatomical variant may be the source of the patient's symptoms.  The other foot is shown for comparison.

Case Discussion

An os calcaneus secundarius is an accessory ossicle of the anterior calcaneal process present in up to 5% of the population at cadaveric examination.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.