i have seen quite a few surgeries, and when the surgeon removes the brain case, and goes in with a suction to remove the hemotoma, he fills the spot with a squirt of antibiotic, so it won't rot after he is done. usually, this only done after the x-ray of the concussion shows that a massive blood-clot has formed in subdural area. the dura is the bone plate on the inner-side of the skull.
the worst that can happen, is that you will loose all of your hair.
all of the neurologists i have seen work, are pretty sharp and have experience.