Simple fractures are often the result of indirect mechanisms, such as a fall onto an outstretched hand, sporting activities, etc. More details about their clinical and radiographic examination see here .
Simple radial fractures are classified by AO/OTA as 2R2A. They are further subdivided based on the direction of the radial fracture line.
If there is a concomitant involvement of the distal radioulnar joint (Galeazzi), this is indicated with the qualifier (g).
1. Oblique and spiral fractures
These fractures include:
- Spiral fractures of the radius (AO/OTA 2R2A1)
Oblique fractures of the radius (AO/OTA 2R2A2)
Transverse and short oblique (< 30°) fractures of the radius are classified as AO/OTA 2R2A3.
3. With dislocation of distal radioulnar joint (Galeazzi)
In a Galeazzi fracture-dislocation the displaced radial shaft fracture is associated with a dislocation of the ulnar head at the distal radioulnar joint (DRUJ).
These are classified by AO/OTA, according to the morphology of the radial fracture, with qualifier (g). For example, the illustration shows a 2R2A2(g).
Most often, the dislocation of the ulnar head is posterior, but very seldom it is anterior (as shown in the x-ray).