What is a Barton's fracture?

A Barton's fracture specifically refers to a fracture and dislocation of the posterior lip of the distal radius, which occurs at the wrist joint. This injury typically results from a fall onto an outstretched hand and is classified as an intra-articular fracture because it involves the joint surface of the radius.

The significance of this type of fracture lies in its complexity; not only does it have a fracture component, but it also involves dislocation, which can affect the stability and functionality of the wrist. Proper identification and treatment are crucial, as this type of injury may lead to long-term complications if not managed appropriately.

In contrast, the other options describe different types of fractures that do not align with the definition of a Barton's fracture. The first option describes a fracture of the proximal phalanx of the thumb, which is not related to the distal radius. The third option is a general description of fractures in the wrist area but does not emphasize the specific characteristics of a Barton's fracture. Lastly, the fourth option mentions a fracture scene in the ankle, which is entirely unrelated to the region of the distal radius. Therefore, the description provided in the correct answer captures the essential features of a Barton's fracture accurately.