Lumbar subarachnoid

What does "Lumbar subarachnoid" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.

Explanation

"Lumbar subarachnoid" refers to a specific area within the lower part of the spine. The term "lumbar" is used to describe the lower back, while "subarachnoid" refers to a space that surrounds the spinal cord. This space is filled with a fluid that helps protect the brain and spinal cord from injury. Therefore, "lumbar subarachnoid" is essentially referring to the fluid-filled space in the lower part of the spine.

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