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Local Anesthetics: Clinical Application as Spinal Anesthesia

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Related Experiment Video

Updated: Jun 17, 2026

Partial Sciatic Nerve Ligation: A Mouse Model of Chronic Neuropathic Pain to Study the Antinociceptive Effect of Novel Therapies

Partial Sciatic Nerve Ligation: A Mouse Model of Chronic Neuropathic Pain to Study the Antinociceptive Effect of Novel Therapies

Published on: October 6, 2022

[Parasacral sciatic nerve block: new approach].

L Bouattour¹, N Ben Abbes, A Essefi

¹Service d'anesthésie-réanimation, hôpital Habib Bourguiba, 06, rue Hédi Chaker, Sfax 3000, Tunisie. bouattour.lotfi@voila.fr

Annales Francaises D'Anesthesie Et De Reanimation

|January 19, 2010

Summary

New skin landmarks simplify parasacral sciatic nerve blocks, improving accessibility and success rates. This technique offers a reliable approach for lower limb surgery anesthesia.

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Published on: June 30, 2023

Area of Science:

Anesthesiology
Anatomy
Surgical Procedures

Background:

The parasacral sciatic nerve block is a common anesthetic technique.
Palpating the ischial tuberosity for accurate needle placement can be challenging.
Novel surface landmarks are needed to improve the precision of this block.

Purpose of the Study:

To introduce and validate new skin landmarks for parasacral sciatic nerve block.
To assess the efficacy and safety of the proposed landmarks in a clinical setting.

Main Methods:

A descriptive, prospective study involving 20 patients undergoing lower limb surgery.
New skin landmarks were defined using anatomical references (ASIS, PSIS, sacral hiatus).
The sciatic nerve block was performed using lidocaine and bupivacaine, with success defined by sensory block extension.

Main Results:

A high success rate of 95% (19/20 patients) was achieved.
The block was performed quickly (3 ± 1.7 min) and accurately at the first attempt.
Patient satisfaction was high (85%), with minimal complications (one vascular puncture).

Conclusions:

The proposed new skin landmarks are simple, reliable, and facilitate access to the sciatic foramen.
These landmarks are effective across various patient morphotypes.
The technique offers a safe and efficient method for parasacral sciatic nerve blockade.