{"id":5494,"date":"2025-12-09T18:15:54","date_gmt":"2025-12-09T23:15:54","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/?post_type=chapter&p=5494"},"modified":"2025-12-09T23:17:21","modified_gmt":"2025-12-10T04:17:21","slug":"skull-fractures-and-brain-injury","status":"web-only","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/chapter\/skull-fractures-and-brain-injury\/","title":{"raw":"11p17 Skull Fractures and Brain Injury","rendered":"11p17 Skull Fractures and Brain Injury"},"content":{"raw":"

Types of Skull Fractures:<\/strong><\/h1>\r\n

1.\u00a0 Linear Fracture<\/strong><\/h1>\r\n
    \r\n \t
  • A\u00a0simple crack<\/strong>\u00a0in the skull.<\/li>\r\n \t
  • Usually\u00a0not<\/strong>\u00a0associated with significant brain damage.<\/li>\r\n \t
  • Often heals with no long-term effects.<\/li>\r\n<\/ul>\r\n

    2.\u00a0 Comminuted Fracture<\/strong><\/h1>\r\n
      \r\n \t
    • Multiple fracture lines.<\/li>\r\n \t
    • Breaks into\u00a0several pieces<\/strong>.<\/li>\r\n \t
    • Increased risk of\u00a0brain injury<\/strong>\u00a0and\u00a0infection<\/strong>.<\/li>\r\n<\/ul>\r\n

      3.\u00a0 Compound Fracture<\/strong><\/h1>\r\n
        \r\n \t
      • Several fragments are\u00a0exposed<\/strong>\u00a0to the environment.<\/li>\r\n \t
      • Higher risk of\u00a0infection<\/strong>\u00a0and\u00a0brain damage<\/strong>.<\/li>\r\n<\/ul>\r\n

        4.\u00a0 Depressed Fracture<\/strong><\/h1>\r\n
          \r\n \t
        • Bone fragments\u00a0pushed inward<\/strong>\u00a0into the brain tissue.<\/li>\r\n \t
        • Direct neurovascular injury<\/strong>.<\/li>\r\n \t
        • Increased risk for\u00a0damages<\/strong>\u00a0such as\u00a0bruising<\/strong>\u00a0and\u00a0hemorrhage<\/strong>.<\/li>\r\n<\/ul>\r\n

          Skull Damage and Injury Sites:<\/strong><\/h1>\r\nSkull Fracture and Brain Injury<\/strong>\r\n
            \r\n \t
          • Skull fractures sometimes\u00a0cause<\/strong>\u00a0or\u00a0protect<\/strong>\u00a0from brain injury.<\/li>\r\n \t
          • Damage may be\u00a0intra-cranial<\/strong>\u00a0or\u00a0extra-cranial<\/strong>.<\/li>\r\n<\/ul>\r\n

            1.\u00a0 Open (Penetrating)<\/strong><\/h1>\r\n
              \r\n \t
            • Bone fragments or objects breach\u00a0external<\/strong>\u00a0environment.<\/li>\r\n \t
            • Risk of\u00a0infection<\/strong>.<\/li>\r\n \t
            • Neurovascular damage and\u00a0hemorrhage<\/strong>.<\/li>\r\n<\/ul>\r\n

              2.\u00a0 Closed (Blunt)<\/strong><\/h1>\r\n
                \r\n \t
              • Skull not broken.<\/li>\r\n \t
              • Brain tissues\u00a0bruise<\/strong>\u00a0or\u00a0shear<\/strong>\u00a0internally.<\/li>\r\n<\/ul>\r\n

                Brain Injury Types:<\/strong><\/h1>\r\n

                1.\u00a0 Primary Injury<\/strong><\/h1>\r\n
                  \r\n \t
                • Result directly from impact.<\/li>\r\n \t
                • Includes\u00a0laceration<\/strong>,\u00a0contusion<\/strong>,\u00a0shearing<\/strong>\u00a0axons.<\/li>\r\n \t
                • Damage\u00a0to neurons, blood vessels, and glia<\/strong>.<\/li>\r\n<\/ul>\r\n

                  2.\u00a0 Secondary Injury<\/strong><\/h1>\r\n
                    \r\n \t
                  • Results from\u00a0inflammation<\/strong>,\u00a0edema<\/strong>,\u00a0hemorrhage<\/strong>.<\/li>\r\n \t
                  • Increased\u00a0intracranial pressure<\/strong>\u00a0leading to\u00a0ischemia<\/strong>\u00a0and\u00a0neuronal death<\/strong>.<\/li>\r\n<\/ul>\r\n

                    Mechanisms of Damage:<\/strong><\/h1>\r\n

                    1.\u00a0 Contusion<\/strong><\/h1>\r\n
                      \r\n \t
                    • Localized\u00a0bruising<\/strong>\u00a0of brain tissue.<\/li>\r\n \t
                    • Mild to moderate to severe\u00a0damage<\/strong>.<\/li>\r\n<\/ul>\r\n

                      2.\u00a0 Shearing (Diffuse Axonal Injury)<\/strong><\/h1>\r\n
                        \r\n \t
                      • Rotational forces cause\u00a0axonal shearing<\/strong>.<\/li>\r\n \t
                      • Widespread\u00a0neuron<\/strong>\u00a0and\u00a0blood vessel<\/strong>\u00a0damage.<\/li>\r\n \t
                      • Often\u00a0irreversible<\/strong>.<\/li>\r\n<\/ul>\r\n

                        3.\u00a0 Hematoma Formation<\/strong><\/h1>\r\n
                          \r\n \t
                        • Bleeding from ruptured vessels.<\/li>\r\n \t
                        • Blood collection (hematoma<\/strong>) increases\u00a0intracranial volume<\/strong>.<\/li>\r\n \t
                        • Causes\u00a0pressure<\/strong>\u00a0on brain tissue, further\u00a0damage<\/strong>.<\/li>\r\n<\/ul>\r\n

                          4.\u00a0 Hemorrhage and Increased ICP<\/strong><\/h1>\r\n
                            \r\n \t
                          • Bleeding\u00a0compresses brain tissue<\/strong>.<\/li>\r\n \t
                          • Collapse of\u00a0blood vessels<\/strong>\u00a0causes\u00a0hypoxia<\/strong>.<\/li>\r\n<\/ul>\r\n

                            Possible Effects of Damage<\/strong><\/h1>\r\n
                              \r\n \t
                            • Compression<\/strong>\u00a0of vital centers in the\u00a0brainstem<\/strong>:\r\n
                                \r\n \t
                              • Respiratory\u00a0failure<\/strong>.<\/li>\r\n \t
                              • Loss of consciousness<\/strong>.<\/li>\r\n \t
                              • Coma<\/strong>\u00a0or\u00a0death<\/strong>\u00a0if untreated.<\/li>\r\n<\/ul>\r\n<\/li>\r\n \t
                              • Herniations<\/strong>:\r\n
                                  \r\n \t
                                • Parts of the brain\u00a0shift<\/strong>\u00a0into different compartments.<\/li>\r\n \t
                                • Can\u00a0pinch<\/strong>\u00a0vital areas, causing\u00a0brainstem death<\/strong>.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n

                                  Monitoring and Treatment<\/strong><\/h1>\r\nImaging<\/strong>\r\n
                                    \r\n \t
                                  • CT or MRI<\/strong>\u00a0to visualize fractures, hemorrhages, and edema.<\/li>\r\n \t
                                  • Angiograms<\/strong>\u00a0for blood vessel assessment.<\/li>\r\n<\/ul>\r\nInterventions<\/strong>\r\n
                                      \r\n \t
                                    • Control ICP<\/strong>\u00a0with medications, hyperventilation, or surgical decompression.<\/li>\r\n \t
                                    • Remove hematomas<\/strong>\u00a0or repair skull fractures.<\/li>\r\n \t
                                    • Use\u00a0ventriculostomy<\/strong>\u00a0or cerebrospinal fluid drainage.<\/li>\r\n \t
                                    • Prevent secondary injury<\/strong>:\r\n
                                        \r\n \t
                                      • Maintain oxygenation.<\/li>\r\n \t
                                      • Treat bleeding and swelling promptly.<\/li>\r\n \t
                                      • Manage blood pressure.<\/li>\r\n<\/ul>\r\n<\/li>\r\n<\/ul>\r\n

                                        Summary<\/strong><\/h1>\r\n
                                          \r\n \t
                                        • Skull fractures and brain injuries vary from mild\u00a0contusions<\/strong>\u00a0to severe\u00a0shearing<\/strong>\u00a0and\u00a0hematomas<\/strong>.<\/li>\r\n \t
                                        • Brain damage can be\u00a0localized<\/strong>\u00a0or\u00a0diffuse<\/strong>, with\u00a0widespread<\/strong>\u00a0neuronal loss if unmanaged.<\/li>\r\n \t
                                        • Early detection and intervention are essential to\u00a0prevent fatal outcomes<\/strong>.<\/li>\r\n<\/ul>\r\n ","rendered":"

                                          Types of Skull Fractures:<\/strong><\/h1>\n

                                          1.\u00a0 Linear Fracture<\/strong><\/h1>\n
                                            \n
                                          • A\u00a0simple crack<\/strong>\u00a0in the skull.<\/li>\n
                                          • Usually\u00a0not<\/strong>\u00a0associated with significant brain damage.<\/li>\n
                                          • Often heals with no long-term effects.<\/li>\n<\/ul>\n

                                            2.\u00a0 Comminuted Fracture<\/strong><\/h1>\n
                                              \n
                                            • Multiple fracture lines.<\/li>\n
                                            • Breaks into\u00a0several pieces<\/strong>.<\/li>\n
                                            • Increased risk of\u00a0brain injury<\/strong>\u00a0and\u00a0infection<\/strong>.<\/li>\n<\/ul>\n

                                              3.\u00a0 Compound Fracture<\/strong><\/h1>\n
                                                \n
                                              • Several fragments are\u00a0exposed<\/strong>\u00a0to the environment.<\/li>\n
                                              • Higher risk of\u00a0infection<\/strong>\u00a0and\u00a0brain damage<\/strong>.<\/li>\n<\/ul>\n

                                                4.\u00a0 Depressed Fracture<\/strong><\/h1>\n
                                                  \n
                                                • Bone fragments\u00a0pushed inward<\/strong>\u00a0into the brain tissue.<\/li>\n
                                                • Direct neurovascular injury<\/strong>.<\/li>\n
                                                • Increased risk for\u00a0damages<\/strong>\u00a0such as\u00a0bruising<\/strong>\u00a0and\u00a0hemorrhage<\/strong>.<\/li>\n<\/ul>\n

                                                  Skull Damage and Injury Sites:<\/strong><\/h1>\n

                                                  Skull Fracture and Brain Injury<\/strong><\/p>\n

                                                    \n
                                                  • Skull fractures sometimes\u00a0cause<\/strong>\u00a0or\u00a0protect<\/strong>\u00a0from brain injury.<\/li>\n
                                                  • Damage may be\u00a0intra-cranial<\/strong>\u00a0or\u00a0extra-cranial<\/strong>.<\/li>\n<\/ul>\n

                                                    1.\u00a0 Open (Penetrating)<\/strong><\/h1>\n
                                                      \n
                                                    • Bone fragments or objects breach\u00a0external<\/strong>\u00a0environment.<\/li>\n
                                                    • Risk of\u00a0infection<\/strong>.<\/li>\n
                                                    • Neurovascular damage and\u00a0hemorrhage<\/strong>.<\/li>\n<\/ul>\n

                                                      2.\u00a0 Closed (Blunt)<\/strong><\/h1>\n
                                                        \n
                                                      • Skull not broken.<\/li>\n
                                                      • Brain tissues\u00a0bruise<\/strong>\u00a0or\u00a0shear<\/strong>\u00a0internally.<\/li>\n<\/ul>\n

                                                        Brain Injury Types:<\/strong><\/h1>\n

                                                        1.\u00a0 Primary Injury<\/strong><\/h1>\n
                                                          \n
                                                        • Result directly from impact.<\/li>\n
                                                        • Includes\u00a0laceration<\/strong>,\u00a0contusion<\/strong>,\u00a0shearing<\/strong>\u00a0axons.<\/li>\n
                                                        • Damage\u00a0to neurons, blood vessels, and glia<\/strong>.<\/li>\n<\/ul>\n

                                                          2.\u00a0 Secondary Injury<\/strong><\/h1>\n
                                                            \n
                                                          • Results from\u00a0inflammation<\/strong>,\u00a0edema<\/strong>,\u00a0hemorrhage<\/strong>.<\/li>\n
                                                          • Increased\u00a0intracranial pressure<\/strong>\u00a0leading to\u00a0ischemia<\/strong>\u00a0and\u00a0neuronal death<\/strong>.<\/li>\n<\/ul>\n

                                                            Mechanisms of Damage:<\/strong><\/h1>\n

                                                            1.\u00a0 Contusion<\/strong><\/h1>\n
                                                              \n
                                                            • Localized\u00a0bruising<\/strong>\u00a0of brain tissue.<\/li>\n
                                                            • Mild to moderate to severe\u00a0damage<\/strong>.<\/li>\n<\/ul>\n

                                                              2.\u00a0 Shearing (Diffuse Axonal Injury)<\/strong><\/h1>\n
                                                                \n
                                                              • Rotational forces cause\u00a0axonal shearing<\/strong>.<\/li>\n
                                                              • Widespread\u00a0neuron<\/strong>\u00a0and\u00a0blood vessel<\/strong>\u00a0damage.<\/li>\n
                                                              • Often\u00a0irreversible<\/strong>.<\/li>\n<\/ul>\n

                                                                3.\u00a0 Hematoma Formation<\/strong><\/h1>\n
                                                                  \n
                                                                • Bleeding from ruptured vessels.<\/li>\n
                                                                • Blood collection (hematoma<\/strong>) increases\u00a0intracranial volume<\/strong>.<\/li>\n
                                                                • Causes\u00a0pressure<\/strong>\u00a0on brain tissue, further\u00a0damage<\/strong>.<\/li>\n<\/ul>\n

                                                                  4.\u00a0 Hemorrhage and Increased ICP<\/strong><\/h1>\n
                                                                    \n
                                                                  • Bleeding\u00a0compresses brain tissue<\/strong>.<\/li>\n
                                                                  • Collapse of\u00a0blood vessels<\/strong>\u00a0causes\u00a0hypoxia<\/strong>.<\/li>\n<\/ul>\n

                                                                    Possible Effects of Damage<\/strong><\/h1>\n
                                                                      \n
                                                                    • Compression<\/strong>\u00a0of vital centers in the\u00a0brainstem<\/strong>:\n
                                                                        \n
                                                                      • Respiratory\u00a0failure<\/strong>.<\/li>\n
                                                                      • Loss of consciousness<\/strong>.<\/li>\n
                                                                      • Coma<\/strong>\u00a0or\u00a0death<\/strong>\u00a0if untreated.<\/li>\n<\/ul>\n<\/li>\n
                                                                      • Herniations<\/strong>:\n
                                                                          \n
                                                                        • Parts of the brain\u00a0shift<\/strong>\u00a0into different compartments.<\/li>\n
                                                                        • Can\u00a0pinch<\/strong>\u00a0vital areas, causing\u00a0brainstem death<\/strong>.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                                                                          Monitoring and Treatment<\/strong><\/h1>\n

                                                                          Imaging<\/strong><\/p>\n

                                                                            \n
                                                                          • CT or MRI<\/strong>\u00a0to visualize fractures, hemorrhages, and edema.<\/li>\n
                                                                          • Angiograms<\/strong>\u00a0for blood vessel assessment.<\/li>\n<\/ul>\n

                                                                            Interventions<\/strong><\/p>\n

                                                                              \n
                                                                            • Control ICP<\/strong>\u00a0with medications, hyperventilation, or surgical decompression.<\/li>\n
                                                                            • Remove hematomas<\/strong>\u00a0or repair skull fractures.<\/li>\n
                                                                            • Use\u00a0ventriculostomy<\/strong>\u00a0or cerebrospinal fluid drainage.<\/li>\n
                                                                            • Prevent secondary injury<\/strong>:\n
                                                                                \n
                                                                              • Maintain oxygenation.<\/li>\n
                                                                              • Treat bleeding and swelling promptly.<\/li>\n
                                                                              • Manage blood pressure.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

                                                                                Summary<\/strong><\/h1>\n
                                                                                  \n
                                                                                • Skull fractures and brain injuries vary from mild\u00a0contusions<\/strong>\u00a0to severe\u00a0shearing<\/strong>\u00a0and\u00a0hematomas<\/strong>.<\/li>\n
                                                                                • Brain damage can be\u00a0localized<\/strong>\u00a0or\u00a0diffuse<\/strong>, with\u00a0widespread<\/strong>\u00a0neuronal loss if unmanaged.<\/li>\n
                                                                                • Early detection and intervention are essential to\u00a0prevent fatal outcomes<\/strong>.<\/li>\n<\/ul>\n

                                                                                   <\/p>\n","protected":false},"author":1370,"menu_order":23,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":["zoe-soon"],"pb_section_license":"cc-by-nc-sa"},"chapter-type":[],"contributor":[60],"license":[57],"class_list":["post-5494","chapter","type-chapter","status-web-only","hentry","contributor-zoe-soon","license-cc-by-nc-sa"],"part":76,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/chapters\/5494","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/wp\/v2\/users\/1370"}],"version-history":[{"count":7,"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/chapters\/5494\/revisions"}],"predecessor-version":[{"id":5498,"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/chapters\/5494\/revisions\/5498"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/parts\/76"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/chapters\/5494\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/wp\/v2\/media?parent=5494"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/pressbooks\/v2\/chapter-type?post=5494"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/wp\/v2\/contributor?post=5494"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/pathophysiology\/wp-json\/wp\/v2\/license?post=5494"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}