Os epilunate

Case contributed by Imran Ahmad Khan
Diagnosis certain

Presentation

Trauma to the right wrist.

Patient Data

Age: 45 years
Gender: Male

X-ray of the wrist

x-ray

Radiographs of the right wrist showed intra-articular fracture of the distal radius. No accessory ossicle is identified.

CT of the right wrist

ct

CT scan of the right wrist was obtained for further assessment of the fracture. The study shows intra-articular fracture of the distal radius.

A small well-corticated osseous density is noted adjoining the dorsal border of the lunate, at the dorsal surface of the lunocapitate articulation, representing an accessory ossicle (os epilunate).

Annotated

ct

Annotated CT images.

Case Discussion

The patient was being evaluated for wrist trauma. The accessory ossicle was noted incidentally. The patient did not have any symptoms in relation to the accessory ossicle. 

Os epilunate is exceedingly rare 1. It is located dorsally, along the dorsal surface of the lunocapitate articulation.

Accessory ossicles in the wrist can be a source of pain or can be misinterpreted as fracture or a loose body.   

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.