Colles fracture involves which bone?

Colles fracture involves which bone?

• A. Radius
• B. Ulna
• C. Femur
• D. Tibia

Answer: (A)

Colles fracture is a break that occurs in the distal part of the radius, near the wrist, usually from a fall on an outstretched hand. The distal fragment tilts backward (dorsally), which gives the classic dinner- fork deformity on X-ray. Because the injury is at the end of the radius near the wrist, the bone involved is the radius. The ulna is not the primary bone fractured in this pattern (though forearm injuries can involve both bones), and the femur and tibia are in the leg, not the forearm.

Colles fracture is a break that occurs in the distal part of the radius, near the wrist, usually from a fall on an outstretched hand. The distal fragment tilts backward (dorsally), which gives the classic dinner- fork deformity on X-ray. Because the injury is at the end of the radius near the wrist, the bone involved is the radius. The ulna is not the primary bone fractured in this pattern (though forearm injuries can involve both bones), and the femur and tibia are in the leg, not the forearm.