• Joe Iwanaga, Tyler Warner, Tyler A Scullen, Alex von Glinski, Basem Ishak, C J Bui, Aaron S Dumont, and R Shane Tubbs.
• Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine, New Orleans, Louisiana, USA; Division of Gross and Clinical Anatomy, Department of Anatomy, Kurume University School of Medicine, Kurume, Fukuoka, Japan. Electronic address: iwanagajoeca@gmail.com.
• World Neurosurg. 2020 Apr 1; 136: e365-e370.

BackgroundThe proximal course of the obturator nerve as related to the psoas major has been described differently among various authors. Because this relationship is important for better understanding of clinical presentations and during surgical approaches, this study aimed to elucidate this anatomy via cadaveric dissection.MethodsTwenty obturator nerves from 10 white cadaveric specimens underwent dissection. Observations were made of the relationship between the nerve and psoas major muscle.ResultsOn all sides, the obturator nerve descended posterior to the psoas major and never through it.ConclusionsThese results might be important to clinicians who interpret radiology of this region, to clinicians who treat patients with presumed obturator compression syndromes, or to surgeons who operate near the intracavitary part of the obturator nerve.Copyright © 2020 Elsevier Inc. All rights reserved.

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