• Reg Anesth Pain Med · Jul 2007

    Anatomical location of the bifurcation of the sciatic nerve in the posterior thigh in infants and children: a formula derived from MRI imaging for nerve localization.

    • Santhanam Suresh, Carmen Simion, Mary Wyers, Melissa Swanson, Melissa Jennings, and Aditya Iyer.
    • Children's Memorial Hospital, Northwestern University, Feinberg School of Medicine, Chicago, IL 60614, USA. ssuresh@childrensmemorial.org
    • Reg Anesth Pain Med. 2007 Jul 1;32(4):351-3.

    Background And ObjectivesSciatic nerve block is performed at the popliteal fossa for various surgical procedures in infants and children. The aim of this study is to review magnetic resonance imaging scans in children of various ages to assess the location of the division of the nerve in the posterior thigh.MethodsAfter Institutional Review Board approval was obtained, measurements of the bifurcation of the sciatic nerve in the posterior thigh were recorded from magnetic resonance images that were previously obtained in children of various ages. Data were recorded in a database and parametric and nonparametric statistical analysis was performed.ResultsMeasurements were recorded from 59 patient images. Using a linear regression model, we were able to arrive at a formula for determining the point of bifurcation of the sciatic nerve at the posterior thigh. The mathematical formula derived from the linear regression equation was:ConclusionsWe speculate that this knowledge will assist practitioners who use nerve stimulation techniques for sciatic nerve blocks in children of all ages.

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