Depression Increases Posterior Cervical Decompression and Fusion Revision Rates and Diminishes Neck Disability Index Improvement.

Abstract

A retrospective cohort study. To determine if depression and/or anxiety significantly affect patient-reported outcome measures (PROMs) after posterior cervical decompression and fusion (PCDF). Mental health diagnoses are receiving increased recognition for their influence of outcomes after spine surgery. The magnitude that mental health disorders contribute to patient-reported outcomes following PCDF requires increased awareness and understanding. A review of electronic medical records identified patients who underwent a PCDF at a single institution during the years 2013-2020. Patients were placed into either depression/anxiety or nondepression/anxiety group based on their medical history. A delta score (∆) was calculated for all PROMs by subtracting postoperative from preoperative scores. χ 2 tests and t tests were utilized to analyze categorical and continuous data, respectively. Regression analysis determined independent predictors of change in PROMs. Alpha was set at 0.05. A total of 195 patients met inclusion criteria, with 60 (30.8%) having a prior diagnosis of depression/anxiety. The depression/anxiety group was younger (58.8 vs . 63.0, P =0.012), predominantly female (53.3% vs . 31.9%, P =0.007), and more frequently required revision surgery (11.7% vs . 0.74%, P =0.001). In addition, they had worse baseline mental component (MCS-12) (42.2 vs . 48.6, P <0.001), postoperative MCS-12 (46.5 vs . 52.9, P =0.002), postoperative neck disability index (NDI) (40.7 vs . 28.5, P =0.001), ∆NDI (-1.80 vs . -8.93, P =0.010), NDI minimum clinically important difference improvement (15.0% vs . 29.6%, P =0.046), and postoperative Visual Analog Scale (VAS) Neck scores (3.63 vs . 2.48, P =0.018). Only the nondepression/anxiety group improved in MCS-12 ( P =0.002) and NDI ( P <0.001) postoperatively. Depression and/or anxiety was an independent predictor of decreased magnitude of NDI improvement on regression analysis (β=7.14, P =0.038). Patients with history of depression or anxiety demonstrate less improvement in patient-reported outcomes and a higher revision rate after posterior cervical fusion, highlighting the importance of mental health on clinical outcomes after spine surgery.