What question did this study set out to answer?

The aim is to evaluate how body mass index affects surgical outcomes for grade 1 spondylolisthesis.

January 26, 2026

The comparative impact of body mass index on outcomes following minimally invasive versus open surgery for grade 1 spondylolisthesis: 2-year follow-up from the Quality Outcomes Database.

Key Points

The aim is to evaluate how body mass index affects surgical outcomes for grade 1 spondylolisthesis.
Analysis of surgery outcomes from the Quality Outcomes Database
Comparison of minimally invasive (MI) vs. open surgical approaches
Focus on patients with different BMI categories
Follow-up period of two years
Both surgical approaches led to patient improvement over time.
Patients with BMI ≥ 30 kg/m2 showed better outcomes with MI surgery.
No significant difference in outcomes noted for patients with BMI < 30 kg/m2.

Abstract

Regardless of approach, patients improved following surgery for grade 1 DLS. Patients with BMI ≥ 30 kg/m2 had better long-term outcomes when treated with an MI surgical approach versus open surgery. This difference in outcomes between MI and open surgery was not observed among patients with BMI < 30 kg/m2.

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