Single-staged versus multi-staged lumbar 360 fusion surgery: a Michigan Spine Surgery Improvement Collaborative (MSSIC) study

Document Type

Conference Proceeding

Publication Date

9-1-2024

Publication Title

Spine J

Abstract

BACKGROUND CONTEXT: Patients undergoing anterior/posterior lumbar fusion surgery can undergo either a single-stage or multi-stage operation depending on surgeon preference. There is limited evidence directly comparing outcomes between single- and multi-stage lumbar fusion surgery. PURPOSE: To assess differences in outcomes between patients who underwent single- versus multi-stage lumbar fusion procedures in a multi-center setting. STUDY DESIGN/SETTING: Not Applicable PATIENT SAMPLE: Not Applicable OUTCOME MEASURES: Not Applicable METHODS: The Michigan Spine Surgery Improvement Collaborative database was queried for lumbar fusion surgeries between July 2018 and January 2022. Patients who underwent single-stage and multi-stage procedures were included. Primary outcomes included postoperative complications and improvement in patient-reported outcomes (PROs) which include: NASS patient satisfaction, PROMIS Physical Function, and EQ-5D. Propensity matching was conducted followed by Poisson generalized estimating equation models for multivariate analyses. RESULTS: Following propensity matching, 355 patients underwent single-stage procedures and 355 patients underwent multi-stage procedures. Patients undergoing multi-stage procedures had more complications, less patient satisfaction after 1 year, and were less likely to experience improvement in back pain after 90 days and at 2 years (1.17[1.02-1.34, p = 0.026], 0.83[0.74-0.93, p < 0.001], 0.86[0.75-0.99, p = 0.039], and 0.76[0.60-0.96, p = 0.023], respectively). CONCLUSIONS: On a matched cohort of patients undergoing lumbar 360 fusion, we observed that patients who undergo a multi-stage approach have higher postoperative complication rates and lower patient satisfaction compared to those who underwent single-stage procedures. Our findings suggest that single-stage lumbar 360 fusion surgery is tolerated well, if not better, than the multi-staged approach. FDA Device/Drug Status: This abstract does not discuss or include any applicable devices or drugs.

Volume

24

Issue

9

First Page

S207

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