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Technical note demonstrates a navigation-assisted approach for caudally migrated lumbar disc herniation, indicating improved access.
Introduction: Severely migrated lumbar disc herniations are challenging to access using conventional interlaminar or transforaminal approaches, especially in revision cases. A transpedicular route provides direct access but raises concerns regarding accuracy, safety, and radiation exposure when fluoroscopy is required. In this Technical Note, we describe a transpedicular unilateral biportal endoscopic (UBE) approach assisted by a compact navigation system for a caudally migrated disc herniation, highlighting its feasibility and potential advantages.
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Umebayashi et al. (2026) studied this question.
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