Final answer:
Straight transverse fractures in long bones result from a force applied perpendicular to the bone's long axis, like a direct impact from a fall or a blow. They differ from other types of fractures such as spiral fractures caused by twisting forces, or impacted fractures resulting from compression.
Step-by-step explanation:
Straight transverse fractures in long bones occur when there is a force applied perpendicular to the long axis of the bone, causing a break straight across the bone. This type of fracture is commonly caused by a strong, direct impact to the bone, such as a fall or a blow. It should not be confused with other types of fractures, such as those caused by torsion, which results in a spiraling break due to twisting forces, an impacted fracture where one bone fragment is driven into another, or comminuted fractures where the bone is broken into several small pieces.
A transverse fracture occurs straight across the long axis of the bone, it typically results from bending stress that exceeds the bone's strength. Contrary to compression forces, which often result in an impacted fracture, or torsional forces leading to a spiral fracture, a transverse fracture is usually caused by a force striking directly on the bone.