Anesthesia and Critical Care Reviews and Commentary (ACCRAC) Podcast Episode 271: Keywords Part 25: Lower Extremity Nerve Blocks
Dec 18, 2023
Topics include lower extremity nerve blocks, anatomy knowledge in performing procedures, differences between popliteal and higher approaches for sciatic nerve blocks, femoral nerve block and its role in lower extremity nerve blocks, strategies for multiple choice questions, and random recommendations for a Trinidadian cooking YouTube channel and a word game called Connections.
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Popliteal Sciatic Nerve Anatomy
- In the popliteal fossa, the sciatic nerve bifurcates into the tibial nerve medially and the common peroneal nerve laterally.
- Ultrasound can identify two nerve structures merging proximally as the sciatic nerve.
Femoral Nerve Block Basics
- Femoral nerve arises from L2-L4 nerve roots and is lateral within the femoral triangle.
- Combine femoral and sciatic nerve blocks for lower extremity coverage below the knee; add obturator block for complete knee anesthesia.
Lateral Femoral Cutaneous Nerve Pain
- Postoperative lateral thigh pain after femoral nerve block indicates lateral femoral cutaneous nerve involvement, not femoral nerve failure.
- Supplement the lateral femoral cutaneous nerve block to address such pain effectively.