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Five-year clinical outcomes with endoscopic transforaminal foraminoplasty for symptomatic degenerative conditions of the lumbar spine: a comparative study of inside-out versus outside-in techniques

  
@article{JSS4625,
	author = {Anthony Yeung and Kai-Uwe Lewandrowski},
	title = {Five-year clinical outcomes with endoscopic transforaminal  foraminoplasty for symptomatic degenerative conditions of the  lumbar spine: a comparative study of inside-out versus outside-in  techniques},
	journal = {Journal of Spine Surgery},
	volume = {6},
	number = {Suppl 1},
	year = {2019},
	keywords = {},
	abstract = {Background: Foraminal stenosis is a condition that is underappreciated by traditionally trained surgeons because the entire foraminal zone is not adequately visualized with the translaminar approach unless extensive removal of the facet is performed to expose the extraforaminal zone. Its direct endoscopic visualization is feasible with the inside-out and outside-in endoscopic transforaminal technique. The authors analyzed the differences in long-term 5-year clinical outcomes of endoscopic transforaminal foraminoplasty for symptoms from lumbar foraminal stenosis to better establish clinical indications for each technique. 
Methods: Long-term 5-year MacNab outcomes, VAS scores, complications, and unintended aftercare were analyzed in a series of 176 patients consisting of 86 inside-out (group 1) and 90 outside-in (group 2) patients treated for sciatica-type back and leg pain due to lumbar foraminal stenosis.
Results: At minimum 5-year follow-up, excellent results according to the MacNab criteria were obtained in 93 (52.8%) patients, good in 63 (35.8%), fair in 17 (9.7%), and poor in 3 (1.7%), respectively. The mean preoperative VAS was 6.87±1.96. The mean postoperative VAS was 3.15±1.59 and 2.98±1.75 at last follow-up, respectively. Both postoperative VAS and final follow-up VAS were statistically reduced at a significance level of P},
	issn = {2414-4630},	url = {https://jss.amegroups.org/article/view/4625}
}