• Shuai-Kang Wang, Peng Cui, Dong-Fan Wang, Peng Wang, Chao Kong, and Shi-Bao Lu.
• Department of Orthopedics, Xuanwu Hospital, Capital Medical University, No.45 Changchun Street, Xicheng District, Beijing, 10053, China.
• Eur Spine J. 2023 Feb 1; 32 (2): 718726718-726.

PurposeTo identify the relationship between depression measured by Zung depression rating scale (ZDRS) and postoperative outcomes (including the patients reported outcomes [PRO] and clinical outcomes) two years after short-segment fusion surgery for degenerative lumbar spinal disease in older patients (aged 75 years and older).MethodsWe enrolled patients who underwent short-segment fusion surgery for lumbar degenerative disease from May 2018 to June 2020. All patients were assessed for depression using the ZDRS. Patients were included in the depression group and not-depressed group based on their scores. Preoperative baseline data were collected on characteristics, comorbidities, laboratory data, pain levels (visual analogue scale [VAS]), functional status (Oswestry Disability Index [ODI]), and surgery-related variables. The primary outcomes were PRO measures, including VAS, ODI and satisfaction two years after lumbar fusion surgery. Other outcomes included postoperative complications, the length of stay, and reoperation. Univariate and multivariate analyses were performed to identify the risk factors for poor satisfaction.ResultsA total of 231 patients (201 in not-depressed and 30 in depressed group) were enrolled in this study. There were no significant differences between the two groups for baseline data. Depressed group had higher rates of choices for dissatisfaction (36.7% vs. 14.0%, p = 0.015), higher VAS scores of low back pain (2.8 ± 2.3 vs. 1.6 ± 1.7, p = 0.012), and worse functional status (31.5 ± 22.5 vs 21.8 ± 19.9, p = 0.015) than the not-depressed group. Depressed patients reported significantly higher rates of postoperative complications and readmissions. Multivariate regression analysis revealed that depression (p = 0.001) was independently associated with postoperative dissatisfaction.ConclusionPreoperative depression was a risk factor for postoperative dissatisfaction, worse functional status, readmission, and complications in older patients undergoing lumbar fusion surgery. Preoperative screening using the Zung depression scale helps inform decision-making when considering fusion surgery for patients aged 75 and older.© 2022. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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