Lateral rotation of the lower extremity increases the distance between the femoral nerve and femoral artery: an ultrasonographic study

The Kaohsiung Journal of Medical Sciences
Hung-Te HsuKuong-Shing Chu

Abstract

Femoral nerve block (FNB) is by far the most useful lower extremity regional anesthetic technique for the anesthesiologist, and high-resolution ultrasonography is a useful tool with which to guide the performance of FNB. However, the relationships between the femoral nerve and the femoral artery in different lower extremity positions have rarely been discussed. The purpose of this study was to evaluate the relative positions of the femoral nerve and artery at different lateral rotational angles of the lower extremities using ultrasonographic imaging. We enrolled 41 healthy volunteers in this study. Two-dimensional ultrasonographic images of the femoral nerve were obtained using an ultrasound unit, in the inguinal crease, for four positions of the bilateral lower extremities: 0 degrees , 15 degrees , 30 degrees and 45 degrees lateral rotation of each extremity. The following assessments were made in each position: minimal skin-to-nerve distance (SN) and deviation of nerve-to-landmark (femoral artery pulsation) horizontal distance (NF). A trend towards lateral rotation of both lower extremities was identified. The Pearson correlation values between rotational degree to SN and rotational degree to NF were -0.216 and 0.430, with p ...Continue Reading

References

Feb 13, 2001·Anesthesia and Analgesia·J D VlokaD M Thys
May 13, 2003·Radiographics : a Review Publication of the Radiological Society of North America, Inc·Emmanuelle M DelfautAnne Cotten
May 23, 2003·Anesthesia and Analgesia·Randa K NoseirThomas J Ebert
Jul 24, 2004·Anesthesia and Analgesia·Ingeborg Schafhalter-ZoppothAndrew T Gray
Sep 2, 2005·Regional Anesthesia and Pain Medicine·Sebastian Schulz-StübnerJ Steven Hata
Jan 19, 2006·Regional Anesthesia and Pain Medicine·Ingeborg Schafhalter-Zoppoth, Bernhard Moriggl

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Citations

Sep 4, 2013·Journal of Clinical Anesthesia·Clara A LoboMarco A Fondi
Jul 15, 2015·Experimental and Therapeutic Medicine·Yipin YuYijun Zhou
Oct 30, 2009·Best Practice & Research. Clinical Anaesthesiology·Paul Warman, Barry Nicholls
Aug 23, 2018·Journal of Anesthesia·Manabu YoshimuraTakashi Toriumi
Feb 9, 2017·Journal of Interventional Cardiac Electrophysiology : an International Journal of Arrhythmias and Pacing·Benedict M WilesPaul R Roberts

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