Colles fracture involves which bone?

Colles fracture involves which bone?

• A. Radius
• B. Ulna
• C. Humerus
• D. Fibula

Answer: (A)

Colles fracture is a break at the distal end of the radius in the forearm, usually after a fall on an outstretched hand. The distal fragment dorsally displaces, giving the classic dinner- fork deformity at the wrist. Because the injury centers on the distal radius, the radius is the bone involved. The other bones listed aren’t the primary structures in this fracture: the humerus is in the upper arm, the ulna is the other forearm bone but not the site described here, and the fibula is in the lower leg.

Colles fracture is a break at the distal end of the radius in the forearm, usually after a fall on an outstretched hand. The distal fragment dorsally displaces, giving the classic dinner- fork deformity at the wrist. Because the injury centers on the distal radius, the radius is the bone involved. The other bones listed aren’t the primary structures in this fracture: the humerus is in the upper arm, the ulna is the other forearm bone but not the site described here, and the fibula is in the lower leg.