• Jason Sheehan, Robert M Starke, Nader Pouratian, and Zachary Litvack.
• Department of Neurological Surgery, University of Virginia, Charlottesville, Virginia, USA. Electronic address: jsheehan@virginia.edu.
• World Neurosurg. 2013 Nov 1;80(5):e27-31.

ObjectiveThe practice of neurosurgery requires fundamental knowledge base. Residency training programs and continuing medical education courses are designed to teach relevant neurosurgical principles. Nevertheless, knowledge gaps exist for neurosurgeons and may be different between cohorts of neurosurgeons. The Self-Assessment in Neurological Surgery (SANS) General Examination and Spine Examination are online educational tools for lifelong learning and maintenance of certification. This study examines the gaps in knowledge of spinal neurosurgeons and general neurosurgeons taking SANS.MethodsFrom 2008 to 2010, a total of 165 spinal neurosurgeons completed the 243 available questions of the SANS Spine Examination. Over that same time frame, 993 general neurosurgeons completed the SANS General Spine Examination. Mean scores were calculated and assessed according to 18 major neurosurgical knowledge disciplines. Statistical analysis was carried out to evaluate for significant knowledge gaps among all users and significant differences in performance between spinal neurosurgeons and their general neurosurgeon counterparts.ResultsThe mean overall examination score was 87.4% ± 7.5% for spinal neurosurgeons and 71.5% ± 8.9% for general neurosurgeons (P < 0.001). Of the 18 major knowledge categories in SANS, spinal neurosurgeons (n = 165) answered questions incorrectly 15% or greater of the time in five of the categories. The categories of lower performance for spinal neurosurgeons were cerebrovascular, anesthesia and critical care, general clinical, tumor, and trauma. For general neurosurgeons (n = 993), the five knowledge categories with lowest performance were cerebrovascular, epilepsy, peripheral nerve, trauma, and radiosurgery. Although spinal neurosurgeons and general neurosurgeons shared some areas of decreased performance including trauma and cerebrovascular, spine neurosurgeons relatively underperformed in general clinical, anesthesia and critical care, and tumor.ConclusionsThe SANS Spine Examination demonstrated knowledge gaps in specific categories for spinal surgeons. The knowledge areas of diminished performance differed between spinal and general neurosurgeons. Identification of specific areas of deficiency could prove useful in the design and implementation of educational programs and maintenance of certification.Copyright © 2013 Elsevier Inc. All rights reserved.

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