![]() Stable Colles' fractures present with minimal comminution. In the United States and in Northern Europe, Colles fractures are the most common fractures in women up to the age of 75 years. It is known that these fractures appear mostly by young adults and the elderly and more often in females compared to males, often there is a history of osteoporosis. įor further information on the Anatomy and assessment of the wrist Epidemiology/Etiology Can be associated with ulnar styloid fracture, TFCC (triangular fibrocartilage complex)tear, scapholunate dissociation. Low energy extra-articular fracture of the distal radius. This make fractures more likely, especially in patients with decreased bone mineral density. The distal metaphysis of the radius is therefore a relative weak point. On the lateral side of the radius is a styloid process, onto which the brachioradialis inserts and from which the radial collateral ligament of the wrist originates.Īt the distal metaphysis of the radius, the cortex of the bone is thinner than the bone proximal and distal, and the relative amount of cancellous bone increases. The distal ulna attaches to a meniscus-like structure, the triangular fibrocartilage discus (TFC), which can be torn with wrist fractures. The distal radius forms the proximal side of the wrist joint. 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 ulna is generally within 2 mm of the radius. The below brief video gives a summary of Colles Fractures.Ī normal posteroanterior (PA) radiograph of the radius is shown in the image below. Colles' fracture is defined as a linear transverse fracture of the distal radius approximately 20-35 mm proximal to the articular surface with dorsal angulation of the distal fragment. The colles fracture is one of the most common and challenging of the outpatient fractures. Communication of the distal fragment and fractures into the joint surface is present in some of these fractures. Possibly the ulnar styloid may be fractured. The fracture originates from a fall on the outstretched hand and is usually associated with dorsal and radial displacement of the distal fragment, and disturbance of the radial-ulnar articulation. The Colles fracture is named after Abraham Colles, an Irish surgeon, who first described it in 1814 by simply looking at the classical deformity before the advent of X-rays It is commonly called a “broken wrist” in spite of the fact that the distal radius is the location of the fracture, not the carpal bones of the wrist. A Colles Fracture is a complete fracture of the radius bone of the forearm close to the wrist resulting in an upward (posterior) displacement of the radius and obvious deformity.
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