The distal ulna attaches to a meniscus-like structure, the triangular fibrocartilage discus, which can be torn with wrist fractures.
There, the radius articulates with the proximal row of carpal bones (allowing flexion and extension) it also articulates with the distal ulna (creating a joint for pronation and supination). The distal radius forms the proximal side of the wrist joint. The eponym “Colles’ fracture” has been used to describe all distal radius fractures, though that name refers specifically to fractures that are angulated dorsally.įigure: Colles fracture ( ) Structure and function Associated injuries to the nearby cartilage and ligaments are also frequently seen.
Distral radius fractures are frequently accompanied by fractures of the ulnar styloid (with possible injury to the cartilage attached to it) or with injuries to the wrist ligaments.
Fractures of the distal radius are often sustained after a fall on the out-stretched hand and are often associated with osteoporosis. Fractures of the distal radius are common.
