Which bone is broken most?

Commonest fracture: In the United States in persons under the age of 75 years the most frequent fracture is a colles fracture (just above the wrist). Over the age of 75 the most frequent fracture is a fracture of the hip bone.

Clavicle: Collar bone fibula has to be a close second.

Collarbone: The clavicle (collarbone) is the most commonly broken bone. Other common fractures involve the wrist, ankle, hip, and vertebrae. Good question.