Anatomy Shelf Notes for the USMLE Preparations [PDF] Download
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Anatomy Shelf Notes for the USMLE Preparations
When a lumbar puncture is
performed, the needle enters the
subarachnoid space to extract
cerebrospinal fluid (spinal tap) or to
inject anesthetic (spinal block) or
contrast material.
Clinical Anatomy: Applied Anatomy for Students and Junior Doctors 14th Edition PDF Download
The needle is usually inserted
between L3/L4 or L4/L5. Level of
horizontal line through upper points
of iliac crests.