For a motorcycle accident patient with closed femur deformities, what is the best course of action?

For a motorcycle accident patient with closed femur deformities, binding the legs together on a backboard is appropriate because it can help stabilize the injured extremities and reduce the risk of further injury during transport. Keeping the patient warm is also critical to prevent hypothermia, especially in trauma cases, as maintaining body temperature can be key to a patient's recovery. Immediate transport without delay is essential in trauma situations to ensure that the patient receives further medical evaluation and treatment as quickly as possible.

In the context of this scenario, other methods such as applying traction splints or using air splints may not be advisable without careful consideration of the patient's overall condition and the associated risks, such as potential neurovascular compromise or additional injuries. Binding the legs appropriately reduces movement and risk of further injury while facilitating swift transport to a medical facility for advanced care.