Colles' fracture most commonly involves a fracture of which bone region?

Colles' fracture most commonly involves a fracture of which bone region?

• A. Distal radius at the wrist
• B. Distal ulna
• C. Proximal humerus
• D. Femoral neck

Answer: (A)

Colles' fracture is a fracture of the distal radius at the wrist, usually from a fall on an outstretched hand. The classic presentation involves the distal fragment tilting dorsally, giving the characteristic dinner fork deformity. Because the injury targets the end of the radius near the wrist, the region involved is the distal radius of the forearm. The other options refer to different bones and joints (the ulna near the wrist is not the typical site for Colles'; the proximal humerus is the upper arm near the shoulder; the femoral neck is in the hip). Therefore, the most common bone region involved is the distal radius at the wrist.

Colles' fracture is a fracture of the distal radius at the wrist, usually from a fall on an outstretched hand. The classic presentation involves the distal fragment tilting dorsally, giving the characteristic dinner fork deformity. Because the injury targets the end of the radius near the wrist, the region involved is the distal radius of the forearm. The other options refer to different bones and joints (the ulna near the wrist is not the typical site for Colles'; the proximal humerus is the upper arm near the shoulder; the femoral neck is in the hip). Therefore, the most common bone region involved is the distal radius at the wrist.