Which of the following is the defining injury pattern of a Galeazzi fracture?

Explanation

## Galeazzi Fracture: Definition and Mechanism **Key Point:** A Galeazzi fracture is defined as a fracture of the distal radius (typically in the distal third) combined with dislocation of the distal radioulnar joint (DRUJ). This is sometimes called the "reverse Monteggia" because the injury is at the opposite end of the forearm. ### Galeazzi vs. Monteggia Comparison | Feature | Monteggia | Galeazzi | | --- | --- | --- | | **Ulnar injury** | Ulna fracture (proximal/middle) | Intact ulna (usually) | | **Radial injury** | Radial head dislocation | Distal radius fracture | | **Joint involved** | Proximal radioulnar joint | Distal radioulnar joint (DRUJ) | | **Mechanism** | FOOSH + pronation | FOOSH + supination/extension | | **Frequency** | More common | Less common | **High-Yield:** The DRUJ dislocation in Galeazzi fractures is often subtle on initial radiographs and is frequently missed. Always compare the width of the DRUJ space on both sides and assess the position of the ulnar head on lateral views. **Clinical Pearl:** Galeazzi fractures are considered "unstable" injuries because the DRUJ dislocation does not reduce spontaneously with reduction of the radial fracture alone. The DRUJ must be specifically addressed during treatment. **Mnemonic:** **GALE** = **GA**leazzi = **LE**ss common (distal radius fracture + DRUJ dislocation), whereas Monteggia is more common (ulna fracture + radial head dislocation).