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Sciatic nerve block-landmarks

Created: 4/11/2009
Updated: 20/11/2009
 

Patient positioning

The patient is placed in the lateral decubitus position, with the leg being blocked on top (Sims position). The upper leg is bent at the hip and knee joints and the upper knee lies on the table. The lower leg is straight.

Landmarks

The import landmarks are: the greater trochanter, posterior, superior iliac spine (PSIS), and sacral hiatus.

From the mid-point of the line connecting the greater trochanter and PSIS, a line is drawn medially (perpendicular) and the injection point is marked at 5cm. To check this, another line connecting the greater trochanter and
the sacral hiatus is bisected. The two points should coincide.


ArticleDate:20091104
SiteSection: Article
 
   
    
                                            
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