Jeremy C Heard, Teeto Ezeonu, Yunsoo Lee, Mark J Lambrechts, Rajkishen Narayanan, Nathaniel Kern, Quinn Kirkpatrick, Jonathan Ledesma, John J Mangan, Jose A Canseco, Mark F Kurd, Barrett Woods, Alan S Hilibrand, Alexander R Vaccaro, Christopher K Kepler, Gregory D Schroeder, Ian David Kaye
OBJECTIVE: Determine if herniation morphology based on the Michigan State University (MSU) Classification is associated with differences in (1) patient-reported outcome measures (PROMs) or (2) surgical outcomes after a microdiscectomy. METHODS: Adult patients undergoing single-level microdiscectomy between 2014 - 2021 were identified. Demographics and surgical characteristics were collected through a query search and manual chart review. The MSU classification, which assesses disc herniation laterality (zone A was central, zone B/C was lateral) and degree of extrusion into the central canal (grade 1 was up to 50% of the distance to the intra-facet line, grade >1 was beyond this line), was identified on preoperative MRIs...
April 18, 2024: World Neurosurgery