Subdural space
The subdural space is a potential space between the dura mater and the underlying arachnoid mater.
Under normal conditions, there is no occurring space between the dura and arachnoid mater. It's rather a thin and weak cell layer. After a trauma or a pathological condition, this space can come into existence.
The subdural space found within the skull has bridging veins carrying blood from the cerebral veins to the dural venous sinuses. With old age, the brain tissue shrinks and atrophies leading to increased venous tension. Consequently, this results in the veins rupturing hemorrhages within the subdural space. In addition, hematomas in this area, can occur after of a forceful impact to the head (such as hitting the dashboard or windshield in a car accident), causing the brain to shift suddenly within the skull. Occasionally, the triggering trauma may be minor or forgotten. These hemorrhages typically stem from veins and frequently involve the tearing of a superior cerebral vein as it enters the superior sagittal sinus.
Terminology |
English: Subdural space Synonym: Subdural cavity Latin: Spatium subdurale Synonym: Cavum subdurale |
Definition | The subdural space is a potential space between the dura mater and the underlying arachnoid mater. |
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