Stratifying outcome based on the Oswestry Disability Index for operative treatment of adult spinal deformity on patients 60 years of age or older: a multicenter, multi-continental study on Prospective Evaluation of Elderly Deformity Surgery (PEEDS).

Journal Article (Journal Article;Multicenter Study)

BACKGROUND CONTEXT: Patients with adult spinal deformity suffer from disease related disability as measured by the Oswestry Disability Index (ODI) for which surgery can result in significant improvements. PURPOSE: The purpose of this study was to show the change in overall and individual components of the ODI in patients aged 60 years or older following multi-level spinal deformity surgery. STUDY DESIGN: Prospective, multicenter, multi-continental, observational longitudinal cohort study PATIENT SAMPLE: Patients ≥60 years undergoing primary spinal fusion surgery of ≥5 levels for coronal, sagittal or combined deformity. OUTCOME MEASURES: Oswestry Disability Index (ODI) METHODS: : Patients completed the ODI pre-operatively for baseline, then at 10 weeks, 12 months and 24 months post-operatively. ODI scores were grouped into deciles, and change was calculated with numerical score and improvement or worsening was further categorized from baseline as substantial (≥20%), marginal (≥10-<20%) or no change (within 10%). RESULTS: Two-hundred nineteen patients met inclusion criteria for the study. The median number of spinal levels fused was 9 [Q1=5.0, Q3=12.0]. Two-year mean (95% CI) ODI improvement was 19.3% (16.7%; 21.9%; p<.001) for all age groups, with mean scores improved from a baseline of 46.3% (44.1%; 48.4%) to 41.1% (38.5%; 43.6%) at 10 weeks (p<.001), 28.1% (25.6%; 30.6%) at 12 months (p<.001), and 27.0% (24.4%; 29.5%) at 24 months (p<.001). At 2 years, 45.5% of patients showed 20% or greater improvement in ODI, 23.7% improved between 10% and 20%, 26.3% reported no change (defined as±10% from baseline), 4.5% of patients reported a worsening between 10% to 20%, and none reported worsening greater than 20%. 59.0% of patients were severely disabled (ODI >40%) pre-operatively, which decreased to 20.2% at 2 years. Significant improvement was observed across all 10 ODI items at 12 and 24 months. The largest improvements were seen in pain, walking, standing, sex life, social life and traveling. CONCLUSIONS: In this prospective, multicenter, multi-continental study of patients 60 years or older undergoing multi-level spinal deformity surgery, almost 70% of patients reported significant improvements in ODI without taking into account surgical indications, techniques or complications. Clear data is presented demonstrating the particular change from baseline for each decile of pre-operative ODI score, for each sub-score, and for each age group.

Full Text

Duke Authors

Cited Authors

  • Nielsen, CJ; Lewis, SJ; Oitment, C; Martin, AR; Lenke, LG; Qiu, Y; Cheung, KM; de Kleuver, M; Polly, DW; Shaffrey, CI; Smith, JS; Spruit, M; Alanay, A; Matsuyama, Y; Jentzsch, T; Rienmuller, A; Shear-Yashuv, H; Pellisé, F; Kelly, MP; Sembrano, JN; Dahl, BT; Berven, SH; Forum Deformity, ASK

Published Date

  • November 2021

Published In

Volume / Issue

  • 21 / 11

Start / End Page

  • 1775 - 1783

PubMed ID

  • 34273569

Electronic International Standard Serial Number (EISSN)

  • 1878-1632

Digital Object Identifier (DOI)

  • 10.1016/j.spinee.2021.07.007


  • eng

Conference Location

  • United States