You'll need two or three people to help you roll the patient onto her back. Wash your hands before rolling and explain to the patient what you're going to do (if she's conscious). The patient should be lying on a blanket or turning sheet with her hands placed across her chest. You should all be holding the blanket or sheet on the side of the patient that's farthest from you. Gradually pull the sheet towards you and over the patient, turning her onto her back. Once the patient is on her back, you can examine the skin. Look for any bruising that might indicate trauma, lacerations or gunshot wounds. Since you should have already examined and cleared the cervical spine, you'll need to press (palpate) each individual vertebrae of the back. Specifically, palpate the thoracic and lumbar spine, feeling each vertebrae for pain that might indicate a fracture.  Don't forget to check any parts of the musculo-skeletal system that you might not have examined earlier. For example, you can ask the patient to grasp your finger with their clutched hand to check for motor control and strength, and then ask the patient to tell you without looking which finger of theirs you are gripping. Palpate down the lengths of the arms and legs as well, all the way to the toes and fingers to feel for possible fractures. You can also do this when you are doing the log roll check of the patient's spine. Once the primary and secondary surveys are complete, perform a TTS. This extensive examination should take place within 24 hours of admitting the patient. Or, do it when the patient is awake and alert enough to participate in the examination. You'll need to get the patient's medical chart that includes all laboratory and radiologic data. This information will be combined with the opinions of consultants in order to make a management and care plan that's specific to the patient.

Summary:
Log roll the patient. Access the patient's back. Move on to a trauma tertiary survey (TTS).