You are working at a summer camp for teenagers, during a flag football a collision. Which teenager should you treat first?

A. Peter, a 16 year old with a large hematoma on his arm, but the arm has full range of motion: A hematoma without functional impairment or neurovascular compromise is concerning but not immediately life- or limb-threatening. Observation and supportive care are appropriate after more urgent injuries are addressed. B. Davie, a 17 year old with pain in his ankle, unable to bear weight on the ankle: An ankle injury with inability to bear weight may indicate a fracture or severe sprain. While painful, it is not immediately threatening to life or limb and can be assessed after more severe injuries are managed. C. Bobby, a 16 year old with a contusion of his thigh after a game the teenagers had: A thigh contusion is generally minor unless there are signs of compartment syndrome or significant bleeding. This injury is low priority compared to limb-threatening injuries. D. Ronald, 15 years old with one arm longer than the other, unable to move the arm at the shoulder joint: This presentation suggests a dislocation or fracture of the shoulder with possible neurovascular compromise. Immediate assessment and stabilization are required to prevent further injury, making this the highest priority for treatment.