A spiral fracture is commonly associated with which scenario?

A spiral fracture occurs when a twisting or rotational force is applied to a bone, leading to a fracture that spirals around the bone's shaft. This type of fracture is particularly common in situations where torque is exerted on the limb, as seen in activities like skiing, where sudden twists can occur if a skier falls or loses balance. The unique shape of the fracture is indicative of the mechanism involved, making it distinct from other fracture types that result from direct blows or compression.

In contrast, falling from a height often results in vertical fractures due to the impact force directed downward, direct impacts from vehicles typically cause fractures from blunt force, and overuse injuries primarily lead to stress fractures rather than spiral fractures. Thus, the association of spiral fractures with torque and twisting motions is what solidifies the correctness of this answer.