ArticleInterventional pain medicine2026
Pedicle paradox: Duplicate vertebral pedicles creating a rare "pseudo foramen" with symptomatic foraminal stenosis.
Article in Interventional pain medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Introduction: Duplication of a vertebral pedicle is a rare congenital anatomic variant with limited representation in the medical literature. Such anomalies are thought to arise during intrauterine or early postnatal phases of osseous development. Aberrant pedicle duplication can result in the creation of a "pseudo foramen," with potential clinical implications that are not well characterized. Case: A patient presented with symptoms of painful burning sensations and paresthesias within the right groin and anterior thigh, consistent with upper lumbar radiculopathy. Advanced imaging of the lumbar spine revealed neuroforaminal stenosis associated with a "pseudo foramen" at L2, created by pedicle duplication. Together with clinical suspicion, results of a transforaminal epidural steroid injection supported the conclusion that the neuroforaminal stenosis at this level contributed to the patient's symptoms. This report examines the embryological origins and imaging findings of pedicle formation, considers the spectrum of pedicle duplication and semi-segmented hemivertebra, and reviews relevant imaging findings. Conclusion: This case highlights the importance of carefully reviewing lumbar imaging modalities. Not only is there observation of a rare duplication of vertebral pedicles, but also a thorough review of available literature suggests that this is the first case to specifically report on clinically significant stenosis occurring within a "pseudo foramen."
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