Study Design. Retrospective Cohort Objective. To examine the profile of older patients undergoing revision lumbar fusion and to evaluate the impact that advancing age may have on outcomes following revision lumbar fusion. Summary of Background Data. The proportion of older patients undergoing revision lumbar fusion is increasing, however, the benefit of revision lumbar fusion in an aging demographic is not well documented. Methods. Patients aged 55+ who underwent revision lumbar between 2011 and 2022 were included and were stratified into age groups: 55-64, 65-74, and 75+. Primary outcomes consisted of postoperative emergency department (ED) visits, 30- and 90-day readmissions, all-cause reoperations, and the need for secondary revisions. Secondary outcomes included patient-reported outcome measures (PROMs) obtained preoperatively, and at three months and one year postoperatively. Results. A total of 914 patients were included: 55-64 years (n=512, mean: 61.1 years), 65-74 years (n=296, mean:69.1 years), and 75+ (n=106, mean:78.9 years). Adjacent segment disease as a revision indication significantly increased with age(P=0.001). A circumferential approach was used most (N=200, 39.7%) in patients 55-64, while a posterior-only approach was used in 86.3% of patients 75+(P<0.001). Levels decompressed increased with age, from 1.67 in the youngest group to 2.04 in the oldest (P<0.001). The number of levels fused showed no significant difference (P=0.068). 90-day readmissions and the need for secondary revisions did not vary by age. Age groups were not independently associated with ΔPROMs at one year, but the oldest groups continued to experience improvement in PROMs in line with their younger counterparts. Conclusion. Patients 75 years and older derive similar benefits from revision lumbar fusion compared to their younger counterparts with no increased risk of ED visits, readmissions, or reoperations. Clinicians should be advised that there remains significant value in revising older patients when indicated. Level of Evidence. 3
Read full abstract