What is the primary purpose of an AO periosteal elevator?

The primary purpose of an AO periosteal elevator is to elevate soft tissue from bones. This instrument is specifically designed to gently separate and lift soft tissue, such as muscle or periosteum, away from the bone surface without causing damage. The unique shape of the periosteal elevator allows it to access areas around bones effectively, making it essential during surgical procedures where clear visibility and access to the bone are required, such as in orthopedic surgeries. Its primary use focuses on ensuring minimal trauma to surrounding tissues while allowing for the necessary exposure of underlying structures.

The other choices do not accurately reflect the function of a periosteal elevator, as it is not intended for cutting through bone, measuring bone curvature, or holding back soft tissues in a manner characteristic of retractors. Each of those instruments has a different design and purpose tailored to their specific surgical roles. In contrast, the periosteal elevator is solely focused on the gentle manipulation of soft tissue relative to the bone.