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Jeffrey J. Hébert, Tyler Adams, Erin Cunningham, Dana El-Mughayyar, Neil Manson, Edward Abraham, Niels Wedderkopp, Erin Bigney, Eden Richardson, Amanda Vandewint, Chris Small, George Kolyvas, Andre le Roux, Aaron Robichaud, Michael H. Weber, Charles Fisher, Nicolas Dea, Stephan du Plessis, Raphaele Charest-Morin, Sean D. Christie, Christopher S. Bailey, Y. Raja Rampersaud, Michael G. Johnson, Jerome Paquet, Andrew Nataraj, Bernard LaRue, Hamilton Hall, and Najmedden Attabib

OBJECTIVE

Anterior cervical discectomy and fusion (ACDF) is often described as the gold standard surgical technique for cervical spondylotic radiculopathy. Although outcomes are considered favorable, there is little prognostic evidence to guide patient selection for ACDF. This study aimed to 1) describe the 24-month postoperative trajectories of arm pain, neck pain, and pain-related disability; and 2) identify perioperative prognostic factors that predict trajectories representing poor clinical outcomes.

METHODS

In this retrospective cohort study, patients with cervical spondylotic radiculopathy who underwent ACDF at 1 of 12 orthopedic or neurological surgery centers were recruited. Potential outcome predictors included demographic, health, clinical, and surgery-related prognostic factors. Surgical outcomes were classified by trajectories of arm pain intensity, neck pain intensity (numeric pain rating scales), and pain-related disability (Neck Disability Index) from before surgery to 24 months postsurgery. Trajectories of postoperative pain and disability were estimated with latent class growth analysis, and prognostic factors associated with poor outcome trajectory were identified with robust Poisson models.

RESULTS

The authors included data from 352 patients (mean age 50.9 [SD 9.5] years; 43.8% female). The models estimated that 15.5%–23.5% of patients followed a trajectory consistent with a poor clinical outcome. Lower physical and mental health–related quality of life, moderate to severe risk of depression, and longer surgical wait time and procedure time predicted poor postoperative trajectories for all outcomes. Receiving compensation and smoking additionally predicted a poor neck pain outcome. Regular exercise, physiotherapy, and spinal injections before surgery were associated with a lower risk of poor disability outcome. Patients who used daily opioids, those with worse general health, or those who reported predominant neck pain or a history of depression were at greater risk of poor disability outcome.

CONCLUSIONS

Patients who undergo ACDF for cervical spondylotic radiculopathy experience heterogeneous postoperative trajectories of pain and disability, with 15.5%–23.5% of patients experiencing poor outcomes. Demographic, health, clinical, and surgery-related prognostic factors can predict ACDF outcomes. This information may further assist surgeons with patient selection and with setting realistic expectations. Future studies are needed to replicate and validate these findings prior to confident clinical implementation.