open access

Vol 68, No 4 (2009)
ORIGINAL ARTICLES
Published online: 2009-11-26
Submitted: 2012-02-06
Get Citation

Anatomical variation of sciatic nerve division in the popliteal fossa and its implication in popliteal nerve blockade

H.A.M. Saleh, M.M.O. El-fark, G.A. Abdel-Hamid
Folia Morphol 2009;68(4):256-259.

open access

Vol 68, No 4 (2009)
ORIGINAL ARTICLES
Published online: 2009-11-26
Submitted: 2012-02-06

Abstract

The sciatic nerve (SN) originates from the L4–S3 roots in the form of two nerve trunks: the tibial nerve (TN) and the common peroneal nerve (CPN). The TN and CPN are encompassed by a single epineural sheath and eventually separate (divide) in the popliteal fossa. This division of the SN occurs at a variable level above the knee and may account for frequent failures reported with the popliteal block.
We studied the level of division of the SN in the popliteal fossa and its relationship to the common epineural sheath of the SN. The level of division of the SN sheath into TN and CPN above the knee was measured in 30 cadaver specimens. The SN was invariably formed of independent trunks (TN and CPN) encompassed in one common epineural sheath. The SN divided at a distance range of 50 to 180 mm above the popliteal fossa crease.
The present findings suggest that the TN and CPN leave the common SN sheath at variable distances from the popliteal crease. This finding and the relationship of the TN and CPN sheaths may have significant implications for popliteal nerve block.

Abstract

The sciatic nerve (SN) originates from the L4–S3 roots in the form of two nerve trunks: the tibial nerve (TN) and the common peroneal nerve (CPN). The TN and CPN are encompassed by a single epineural sheath and eventually separate (divide) in the popliteal fossa. This division of the SN occurs at a variable level above the knee and may account for frequent failures reported with the popliteal block.
We studied the level of division of the SN in the popliteal fossa and its relationship to the common epineural sheath of the SN. The level of division of the SN sheath into TN and CPN above the knee was measured in 30 cadaver specimens. The SN was invariably formed of independent trunks (TN and CPN) encompassed in one common epineural sheath. The SN divided at a distance range of 50 to 180 mm above the popliteal fossa crease.
The present findings suggest that the TN and CPN leave the common SN sheath at variable distances from the popliteal crease. This finding and the relationship of the TN and CPN sheaths may have significant implications for popliteal nerve block.
Get Citation

Keywords

sciatic nerve; division; popliteal fossa; blockade

About this article
Title

Anatomical variation of sciatic nerve division in the popliteal fossa and its implication in popliteal nerve blockade

Journal

Folia Morphologica

Issue

Vol 68, No 4 (2009)

Pages

256-259

Published online

2009-11-26

Bibliographic record

Folia Morphol 2009;68(4):256-259.

Keywords

sciatic nerve
division
popliteal fossa
blockade

Authors

H.A.M. Saleh
M.M.O. El-fark
G.A. Abdel-Hamid

Important: This website uses cookies. More >>

The cookies allow us to identify your computer and find out details about your last visit. They remembering whether you've visited the site before, so that you remain logged in - or to help us work out how many new website visitors we get each month. Most internet browsers accept cookies automatically, but you can change the settings of your browser to erase cookies or prevent automatic acceptance if you prefer.

By  "Via Medica sp. z o.o." sp.k., Świętokrzyska 73, 80–180 Gdańsk, Poland

tel.:+48 58 320 94 94, faks:+48 58 320 94 60, e-mail:  viamedica@viamedica.pl