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Patient selection protocols for endoscopic transforaminal, interlaminar, and translaminar decompression of lumbar spinal stenosis

  
@article{JSS4831,
	author = {Álvaro Dowling and Kai-Uwe Lewandrowski and Fabio Henrique Pinto da Silva and Jaime Andrés Araneda Parra and Daniela Molero Portillo and Yohanna Carolina Pineda Giménez},
	title = {Patient selection protocols for endoscopic transforaminal, interlaminar, and translaminar decompression of lumbar spinal stenosis},
	journal = {Journal of Spine Surgery},
	volume = {6},
	number = {Suppl 1},
	year = {2019},
	keywords = {},
	abstract = {Background: The indications of different endoscopic and endoscopically assisted translaminar approaches for lumbar spinal stenosis are not well-defined, and validated protocols for the use of the transforaminal over the interlaminar approach are lacking.
Methods: We performed a retrospective study employing an image-based patient stratification protocol of stenosis location (type I—central canal, type II—lateral recess, type III—foraminal, type IV—extraforaminal) and clinical outcomes on 249 patients consisting of 137 (55%) men and 112 (45%) women with an average age of 56.03±16.8 years who underwent endoscopic surgery for symptomatic spinal stenosis from January 2013 to February 2019. The average follow-up of 38.27±27.9 months. The primary clinical outcome measures were the Oswestry Disability Index (ODI), Visual Analogue Scale (VAS), and modified Macnab criteria.
Results: The frequency of stenosis configuration in decreasing order was as follows: type I—121/249; 48.6%, type III—104/249; 41.8%, type II—15/249; 6%, and type IV—9/249; 3.6%. The transforaminal approach (137/249; 55.0%) was used in most type II to IV lesions followed by the interlaminar approach (78/249; 31.3%), and the full endoscopic approach (12/249; 4.8%), and the endoscopically assisted translaminar approach (8/249; 3.2%) which was exclusively used for type I lesions. Macnab outcomes analysis showed Excellent in 47 patients (18.9%), Good in 178 (71.5%), Fair in 18 (7.2%) and Poor in 6 (2.4%), respectively. Paired two-tailed t-test showed statistically significant VAS (5.46±2.1; P},
	issn = {2414-4630},	url = {https://jss.amegroups.org/article/view/4831}
}