Certified Hand Therapist Exam Practice 2026 – Complete Study Resource

A Colles fracture is most commonly associated with a fall on an outstretched hand (FOOSH injury). This mechanism typically occurs when an individual falls forward and extends their wrist to break the fall, leading to a fracture of the distal radius just proximal to the wrist joint. The injury is characterized by dorsal angulation and dorsal displacement of the distal fragment of the radius, which is indicative of this specific type of fracture.

The other mechanisms listed, such as a direct blow to the wrist, a twisting motion of the wrist, or a severe impact from a fall, are less commonly associated with Colles fractures. While each of these mechanisms can cause various types of wrist injuries, they do not typically result in the classic presentation of a Colles fracture as effectively as a FOOSH injury. Understanding these injury mechanisms is essential for proper assessment and management in a clinical setting.