Differences across various ideal lumbar lordosis measurement formulas for patient-specific sagittal alignment goals.

Journal: Neurosurgical focus
Published Date: Jun 1, 2025

Abstract

OBJECTIVE: Multiple studies in the past have developed equations to determine the ideal lumbar lordosis (ILL) in the sagittal plane. These equations differ but all look to accomplish the same goal of providing the surgeon with specific alignment targets during surgery. To date, no study has compared the different equations of ILL against each other. This study compares 5 target alignment formulas in patients with high, normal, and low pelvic incidence (PI).

Authors

  • David W Polly
    Department of Orthopedic Surgery, University of Minnesota, Minneapolis, MN.
  • Jason J Haselhuhn
    Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN, 55454, USA.
  • Nathan Keller
  • Paul Brian O Soriano
    Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN, 55454, USA.
  • Kari Odland
    Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN, 55454, USA.
  • Kristen E Jones
    Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN, 55454, USA.
  • Jonathan N Sembrano
    Department of Orthopedic Surgery, University of Minnesota, 2450 Riverside Avenue South, Suite R200, Minneapolis, MN, 55454, USA.

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