This report reviews the topographical and functional anatomy relevant for assessing whether or not the obturator nerve (ON) can be anesthetized using a fascia iliaca compartment (FIC) block. The ON does not cross the FIC. This means that the ON would only be blocked by an FIC block if the injectate spreads to the ON outside of the FIC. Such a phenomena would require the creation of one or more artificial passageways to the ON in the retro-psoas compartment or the retroperitoneal compartment by disrupting the normal anatomical integrity of the FI. Due to this requirement for an artificial pathway, an FIC block probably does not block the ON.
- nerve block
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Contributors All authors have made substantial contributions to the conception or design of the manuscript and/or the acquisition of material (figures). All authors have been involved in drafting the work and revising it critically. All authors have approved the final version and agree to be accountable for all aspects of the work.
Funding The study was funded by the Salling Foundation, the Toyota Foundation Denmark, and the Health Research Foundation of the Central Denmark Region. The content is solely the responsibility of the authors.
Competing interests None declared.
Provenance and peer review Not commissioned; externally peer reviewed.