Authors: Jan Fritz Cary Bizzell Sudhir Kathuria Aaron J Flammang Eric H Williams Allan J Belzberg John A Carrino Avneesh Chhabra
Publish Date: 2012/12/20
Volume: 42, Issue: 4, Pages: 579-586
Abstract
A retrospective analysis of 12 posterior femoral cutaneous nerve blocks in 8 patients 6 75 female 2 25 male mean age 47 years range 42–84 years with chronic perineal pain suggesting PFCN neuropathy was performed Procedures were performed with a clinical widebore 15T MR imaging system Highresolution MR imaging was utilized for visualization and targeting of the PFCN Commercially available MRcompatible 20G needles were used for drug delivery Variables assessed were technical success defined as injectant surrounding the targeted PFCN on postintervention MR images effectiveness defined as postinterventional regional anesthesia of the target area innervation downstream from the posterior femoral cutaneous nerve block rate of complications and length of procedure timeMRguided PFCN injections were technically successful in 12/12 cases 100 with uniform perineural distribution of the injectant All blocks were effective and resulted in postinterventional regional anesthesia of the expected areas 12/12 100 No complications occurred during the procedure or during followup The average total procedure time was 45 min 30–70 min
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