Final answer:
The initial response to a motorcycle crash with a patient having multiple injuries includes stabilizing the spine, ensuring ABCs, and preparing for either closed or open reduction of fractures, with an alert to the risk of fat embolism syndrome.
Step-by-step explanation:
Upon arriving at the scene of a motorcycle crash and finding the patient with bilateral closed femur fractures and multiple abrasions and lacerations, your first step is to ensure the patient's ABCs (Airway, Breathing, Circulation) are secure and stabilize any potential spinal injury. Since bystanders have already removed the patient's helmet, it is imperative to immobilize the cervical spine, as there may be an undetected neck injury. Treatment should then focus on preventing further harm, such as assessing for a closed reduction, if possible, for the femur fractures or preparing the patient for an open reduction which would occur in a hospital setting. It is also critical to monitor for signs of fat embolism, especially with femur fractures, as this can lead to respiratory distress and requires immediate medical intervention. On-scene decisions might rely on basic tools, and while imaging (MRI or CT scans) is not available, rapid assessment and transport to a medical facility are crucial.