Head Injury Head Injuries, Closed true https://www.ncbi.nlm.nih.gov/pubmed/13789853 Traumatic injuries to the cranium where the integrity of the skull is not compromised and no bone fragments or other objects penetrate the skull and dura mater. This frequently results in mechanical injury being transmitted to intracranial structures which may produce traumatic brain injuries, hemorrhage, or cranial nerve injuries. closed head injury