Let’s say you have a patient who had an emergency craniotomy. The most common reason for doing this is to relieve intracranial pressure, either from swelling secondary to trauma or from a cerebral hemorrhage.
Of course having a craniotomy necessitates removing part of the skull – after the swelling goes down, the missing piece of the skull is reattached. This is surprisingly common in emergency medicine, but raises the question “Where do you store the bone flap from your cranium while you’re waiting for the swelling to subside?”
Subcutaneously in your abdomen of course! It’s the perfect storage space for your own biological tissue. When you need to suture it back in, it can’t be lost or contaminated – ‘cuz the patient provides mobile, sterile storage for their own missing body part!