Final answer:
Elevating the extremity at the level of the heart is beneficial for injuries that involve swelling and possible compression of the artery to the forearm, such as distal humerus fractures.
Step-by-step explanation:
Elevating the extremity at the level of the heart is beneficial for injuries that involve swelling and possible compression of the artery to the forearm, such as distal humerus fractures. By elevating the extremity, blood flow to the injured area is improved, reducing swelling and promoting healing. In the case of distal humerus fractures, it helps prevent compression of the artery and reduces the risk of ischemia.