• World Neurosurg · Dec 2024

    Concomitant DISH and cervical OPLL: a U.S. database study of clinical prevalence, surgical intervention, patient characteristics, and post-operative complications.

    • Audrey L Litvak, Douglas M Zhang, Henry Seidel, Dillon Benson, Cody S Lee, Michael J Lee, and Mostafa H El Dafrawy.
    • Pritzker School of Medicine, University of Chicago, Chicago, Illinois, USA.
    • World Neurosurg. 2024 Dec 11; 195: 123506123506.

    BackgroundConcomitant diffuse idiopathic skeletal hyperostosis (DISH) and cervical ossification of the posterior longitudinal ligament (cOPLL) are primarily investigated in radiographic studies of East Asian populations. This study aimed to determine clinical prevalence of concomitant DISH/cOPLL in a large U.S. sample and to compare characteristics and complications in cOPLL patients with and without concomitant DISH who were surgically treated.MethodsA retrospective database study was performed using PearlDiver. Billing codes identified cOPLL patients with and without concomitant DISH during 2010-2022. Annual prevalence was calculated. Patients undergoing cervical/thoracic spine decompression with/without fusion were included. Bivariate analyses compared patient characteristics, 1-year reoperation, and cohort-matched 90-day complications.ResultsA total of 681 cOPLL patients had concomitant DISH and 28,395 did not. Prevalence of DISH in patients with cOPLL was 1.4%. cOPLL patients with DISH underwent surgery more frequently than those without (30.2% vs. 21.7%; P < 0.0001) via posterior approach (68.0% vs. 42.1%; P < 0.0001). cOPLL patients with DISH undergoing surgery were more frequently male (71.0% vs. 51.6%; P < 0.0001) with higher proportion of metabolic syndrome (61.4% vs. 37.9%; P < 0.0001). Compared with cOPLL patients without DISH, cOPLL patients with DISH had similar 1-year reoperation (8.3% vs. 9.6%; P = 0.61) and postmatch 90-day complications (17.8% vs. 14.2%; P = 0.31), but higher overall neurologic injury (14.7% vs. 6.9%; P = 0.0047) amid infrequent procedure-related neurologic injury (2.3% vs. 0.6%; P = 0.08).ConclusionsClinical prevalence of DISH in patients with cOPLL in the United States is low; however, cOPLL patients with concomitant DISH underwent surgery more frequently than those without. Despite higher comorbidity burden, cOPLL patients with DISH may have similar short-term postsurgical risk to cOPLL patients without DISH. However, higher nonprocedural neurologic injury in cOPLL patients with DISH may indicate insidious or delayed disease sequelae.Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.

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