A Smith’s fracture is a fracture to the distal radius (wrist). It is often called a reverse Colle’s fracture; the more common type of distal radius fracture.
A Colle’s fracture occurs from falling and landing on an extended wrist (palm side of the hand). The fracture can often displace backwards in the direction of the injury. Whereas a Smith’s fracture is caused by falling with the wrist flexed and the fracture can displace forewards, also in align with the direction of force.