# Ultrasound-guided Subgluteal Sciatic Nerve Block (SNB)

- Link: https://sifsof.com/clinical-apps/subgluteal-sciatic-nerve-block/
- Published: 2020-02-21T01:35:04+00:00
- Author: Developer

Sciatic nerve block is frequently used for [anaesthesia](https://sifsof.com/product-category/doctor-specialties/anesthesiologist/)
or analgesia during [orthopaedic](https://sifsof.com/product-category/doctor-specialties/orthopedic-surgeon/)
foot surgery. Although anatomical landmarks provide valuable clues to the position
of the sciatic nerve, they are only surrogate markers, can vary in patients, and
may be difficult to locate in obese patients. 

  The ultrasound (US)-guided approach may reduce the risk of femoral artery puncture
compared with the landmark-based approach.

### **Which ultrasound scanner is best for Subgluteal sciatic nerve block?**

 The sciatic nerve is imaged approximately at the level of the minor trochanter.
At this location, a curved transducer [SIFULTRAS-5.21](https://sifsof.com/product/wireless-color-portable-ultrasound-convex-3-5-5mhz-sifultras-5-21/)
placed over the anteromedial aspect of the thigh will reveal the musculature of 
all three fascial compartments of the thigh: anterior, medial, and posterior.

Beneath the sartorius muscle is the femoral artery, and deep and medial to this 
vessel is the deep artery of the thigh. Both can be identified with [color Doppler US](https://sifsof.com/product-category/ultrasound-scanner/color-doppler-ultrasound-scanner/)
for orientation. The femur is seen as a hyperechoic rim with a corresponding shadow
beneath the vastus intermedius.

  The subgluteal space, where the sciatic nerve is located, is a well-defined anatomical
space and can be identified using ultrasound at the level of the greater trochanter
and ischial tuberosity. We have also shown that local anaesthetic injected into 
the subgluteal space under ultrasound guidance is effective in producing SNB.

![](https://sifsof.com/wp-content/uploads/2020/02/Ultrasound-guided-Subgluteal-Sciatic-
Nerve-Block-SNB.jpg)

 * ![Color Doppler Wireless Convex Ultrasound Scanner 3.5-5MHz, SIFULTRAS-5.21 main](
   https://sifsof.com/wp-content/uploads/2018/11/SIFULTRAS-5.21-Color-doppler-Convex-
   ultrasound-300x300.jpg)
 * Color Doppler Wireless Convex Ultrasound Scanner 3.5-5MHz, SIFULTRAS-5.21
 * ![Color Wireless Convex Ultrasound Scanner SIFULTRAS-5.25 main](https://sifsof.
   com/wp-content/uploads/2019/03/SIFULTRAS-5.25-Color-doppler-wireless-convex-ultrasound-
   300x300.jpg)
 * Color Wireless Convex Ultrasound Scanner SIFULTRAS-5.25
 * ![Color Convex 2.5-4.5 MHz Ultrasound Scanner SIFULTRAS-9.42, USB Doppler main
   pic](https://sifsof.com/wp-content/uploads/2019/07/SIFULTRAS-9.42-convex-ultrasound-
   doppler-300x300.jpg)
 * Color Convex 2.5-4.5 MHz Ultrasound Scanner SIFULTRAS-9.42, USB Doppler

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_Disclaimer: Although the information we provide is used by different doctors and
medical staff to perform their procedures and clinical applications, the information
contained in this article is for consideration only. SIFSOF is not responsible neither
for the misuse of the device nor for the wrong or random generalizability of the
device in all clinical applications or procedures mentioned in our articles. Users
must have the proper training and skills to perform the procedure with each ultrasound
scanner device._

_The products mentioned in this article are only for sale to medical staff (doctors,
nurses, certified practitioners, etc.) or to private users assisted by or under 
the supervision of a medical professional.  _