# Os centrale carpi bone bruising simulating an acute scaphoid fracture

## TL;DR

A rare case of wrist injury showed bone bruising in an unusual carpal bone, mistaken for a scaphoid fracture.

## Contribution

First reported case of os centrale carpi bone bruising mimicking an acute scaphoid fracture.

## Key findings

- MRI revealed bone bruising in the os centrale carpi, not the scaphoid.
- The patient had a fracture of the ulnar styloid base alongside the bone bruising.
- This case highlights the importance of accurate imaging interpretation in wrist trauma.

## Abstract

Os centrale carpi is an uncommon accessory carpal bone. We report, to the best of our knowledge, the first case of imaging findings of “os centrale carpi bone bruising” simulating an acute scaphoid fracture. The various differential diagnoses of this entity are discussed. A 22-year-old man presented to our hospital with dorsolateral wrist pain following trauma. Radiography revealed a potential fracture line in the distal pole of the scaphoid and a fracture of the base of the ulnar styloid. Magnetic resonance imaging (MRI) revealed bone bruising of the os centrale carpi and a fracture of the ulnar styloid process. The objective of this case report is to present the imaging findings of os centrale carpi bone bruising, an uncommon occurrence in wrist trauma.