Penetrating structures during Spinal and epidural anesthesia

Basic Structures

(안) Spinal cord-Pia mater-Subarachnoid space-Arachnoid membrane-Dura mater-Epidural space-Ligamentum flavum-Interspinous ligament-Supraspinous ligament-Subcutaneous layer-Skin (밖)

Penetrating structures during Spinal anesthesia

Puncture 순서대로
Skin →Subcutaneous layer →Supraspinous ligament→interspinous ligament→Ligamentum flavum→Dura→Arachnoid membrane

Penetrating structures during Epidural anesthesia

Puncture 순서대로
Skin →Subcutaneous layer →Supraspinous ligament→interspinous ligament→Ligamentum flavum

Reference

Miller’s Anesthesia, 8th edition, Ch.19, P., P.

Morgan and Mikhail's Clinical Anesthesiology, 5th edition, Ch.45, P.940, 942, 953