• Bryan A Lieber, Vicky Chiang, Arpan V Prabhu, Nitin Agarwal, Jensen K Henry, Derek Lin, Noojan Kazemi, and Monir Tabbosha.
• Department of Neurological Surgery, University of Arkansas for Medical Sciences, Little Rock, Arkansas, USA.
• World Neurosurg. 2016 Jul 1; 91: 149-53.

ObjectiveA large-scale study on postoperative complications of lumbar fusion surgery for spondylolisthesis comparing patients >80 years old with younger patients has not been performed. The purpose of this study is to assess the effects of extreme age (>80 years old) on early postoperative outcomes after single-level lumbar fusions for spondylolisthesis.MethodsFrom a validated multicenter surgical database, 2475 patients who underwent a single-level lumbar fusion procedure for spondylolisthesis were selected retrospectively. An extreme age cohort with 227 patients >80 years old was compared with a typical age cohort with 2248 patients 45-65 years old.ResultsThe preoperative characteristics and comorbidities were different between the typical age cohort and the extreme age cohort, with older patients having more preoperative comorbidities, including a lack of independent functional health status before surgery (P < 0.001), severe chronic obstructive pulmonary disease (P <0.020), and hypertension requiring medication (P < 0.001). There was significantly greater morbidity among the >80 cohort regarding urinary tract infection (P = 0.008; odds ratio = 3.30; 95% confidence interval, 1.47-7.40) and intraoperative and postoperative transfusions (P < 0.001; odds ratio = 2.186; 95% confidence interval, 1.54-3.11). There was significantly greater morbidity among the younger cohort regarding cardiac arrest requiring cardiopulmonary resuscitation (P = 0.043; odds ratio = 0.099; 95% confidence interval, 0.014-0.704).ConclusionsThis is the first large study comparing the rates of postoperative complications of lumbar fusion surgery for spondylolisthesis in patients >80 years old versus younger patients. The data support that age alone should not exclude a patient for this procedure. However, extra caution is warranted given the slightly increased morbidity.Copyright © 2016 Elsevier Inc. All rights reserved.

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