Unusual formation pattern of the femoral nerve with intramuscular and submuscular courses: a case report
Year: 2025
Type: article
Study design: Case Report
Abstract: BACKGROUND: The femoral nerve typically arises as a single trunk from the posterior divisions of the L2-L4 ventral rami. Variations are rare but clinically significant. CASE REPORT: During routine dissection of an 80-year-old female cadaver, the femoral nerve was found to originate as two distinct trunks, with one passing beneath the psoas major and the other coursing through it. The trunks united proximal to the inguinal ligament. No anomalous muscular slips were present. RESULTS: This configuration appears to be previously unreported. CONCLUSIONS: Surgeons and clinicians performing femoral nerve blocks or interpreting lumbar plexus imaging (e.g., MRI, CT, or ultrasound) should be aware of this variant, as it may influence both diagnostic interpretation and procedural outcomes.
Source: Folia Morphologica
DOI: 10.5603/fm.106775
Institution: Wroclaw Medical University
Language: English
Topic: Peripheral Nerve Disorders
Subfield: Radiology, Nuclear Medicine and Imaging
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W4414624985