Head injuries :

A. Fractures :

1. Linear fractures
2. Deppressed fractures
3. Avultion fractures
4. Skull Base fractures

B. Intracranial lessions :

1. Intracerebral hematomas
2. Epidural hematomas
3. Subdural hematomas
4. Cerebral contussions
5. Cerebral edema
6. Subarachnoid hematomas