Joe Iwanaga, Francisco Reina, Basem Ishak, Miguel Angel Reina, Aaron S Dumont, R Shane Tubbs
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Abstract
Background: Our goal was to revisit the innervation of the adductor muscles of the thigh and add new evidence to currently existing knowledge.
Methods: Ten thighs from five fresh frozen cadavers were dissected. Obturator nerve innervation to the pectineus, obturator externus, adductor brevis, adductor magnus, adductor longus, and gracilis was documented.
Results: The adductor longus and gracilis were innervated by the anterior branch in 100%, and the adductor magnus was innervated by the posterior branch in 100%. The adductor brevis was supplied by both the anterior and posterior branches in 90%. The obturator externus was innervated by the posterior branch in 60% and a direct branch from the main trunk in 10%. No innervation of the obturator externus by the obturator nerve was found in 30%.
Conclusions: The obturator externus and adductor brevis need to be explored further to clarify their innervation.
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