Which disorder is characterized by a fracture of the distal radius with dorsal displacement?

Colles' fracture is characterized specifically by a fracture of the distal radius, typically occurring just proximal to the wrist joint. This type of fracture is most commonly associated with a fall on an outstretched hand, leading to the dorsal (posterior) displacement of the distal fragment of the radius. Clinically, this results in a characteristic "dinner fork" appearance of the wrist when viewed from the side.

This fracture is prevalent in older adults, particularly post-menopausal women who may have reduced bone density. Understanding the mechanism of injury and the associated displacement helps in accurate diagnosis and treatment planning, which may include immobilization and, in some cases, surgical intervention if the fracture is unstable.

The other types of fractures listed do not involve the same characteristics. Galeazzi fractures involve an injury to the distal radius along with an associated dislocation of the distal ulnar joint. Monteggia fractures are characterized by an ulnar fracture along with an anterior dislocation of the radial head. Smith fractures, in contrast to Colles' fractures, involve a fracture of the distal radius with palmar (ventral) displacement.