The radius commonly gets fractured about 2 cm above its lower end (Colles'fracture). This fracture is caused by a fall on the outstretched hand. The distal fragment is displaced upwards and backwards, and the radial styloid process comes to lie proximal to the ulnar styloid process. (It normally lies distal to the ulnar styloid process.) If the distal fragment gets displaced anteriorly, it is called Smith's fracture