GLP-1 drugs reduce bone non-healing (pseudoarthrosis) by 30% after major spine surgery | Research

The takeaway

Propensity-matched analysis shows perioperative GLP-1 RA use reduced pseudoarthrosis risk by 29-33% at all time points (6 months through 3 years) and decreased hospital readmission (RR 0.86) and sepsis (RR 0.49) after long-segment spinal deformity surgery.

30% less pseudoarthrosis
GLP-1 drugs reduced bone non-healing after spine surgery at all time points through 3 years, plus halved sepsis rates—a remarkable perioperative benefit

What the researchers found

Pseudoarthrosis reduction: 6m RR 0.677 (p=0.028), 1y RR 0.708 (p=0.036), 2y RR 0.671 (p=0.010), 3y RR 0.714 (p=0.024). Readmission RR 0.863 (p=0.012). Sepsis RR 0.485 (p=0.002). No increased complications.

Why it matters

Pseudoarthrosis (non-fusion) affects 5-35% of spinal fusion patients, often requiring revision surgery. GLP-1 drugs potentially improving bone healing could benefit millions of spine surgery patients.

How the study worked

Retrospective propensity-matched 1:1 cohort. Adults with ≥7-level posterior spinal instrumentation (2010-2024). GLP-1 RA within 6 months of surgery vs no use.

What this study cannot tell us

Retrospective. Propensity matching cannot eliminate all confounders. GLP-1 users may differ in important unmeasured ways (health consciousness, diabetes management). Bone healing mechanism speculative.

How to read the evidence

Large propensity-matched retrospective study with consistent findings across time points. Strong for observational evidence.

When this study was published

Published in 2025; data 2010-2024.

The bigger picture

This is a remarkable and unexpected finding—GLP-1 drugs may directly promote bone healing. Combined with known anti-inflammatory effects that reduce infection, GLP-1 drugs could become routine perioperative medications for spine surgery.

Questions still open

Do GLP-1 drugs directly promote osteoblast activity?
Should GLP-1 drugs be prescribed perioperatively for spine surgery?
Would this benefit extend to other orthopedic procedures requiring bone healing?

Common questions

Can GLP-1 drugs help bones heal after surgery?

This surprising finding shows patients on GLP-1 drugs had 30% less bone non-healing (pseudoarthrosis) after major spine surgery, with the benefit lasting through 3 years. They also had half the rate of post-surgical sepsis. The mechanism may involve GLP-1 drugs' effects on bone metabolism and inflammation.

Should I take GLP-1 drugs before spine surgery?

This study supports discussing it with your surgeon. GLP-1 drugs reduced both bone healing failure and serious infections after surgery. However, they also slow stomach emptying (important for anesthesia safety), so timing and management with your surgical team is essential.

Read the original research

Perioperative Glucagon-like Peptide-1 Receptor Agonist Use Is Associated With Lower Pseudoarthrosis Rates Following Long-Segment Spinal Deformity Correction: A Propensity-Matched Analysis.

Global spine journal, 21925682251396965

View on PubMed ↗Publisher’s paper ↗

Citation

Stump, Kyle; Kelleher, Sean; Hannah, Theodore C; Patel, Neal; Kanuparthi, Prasad; Vij, Rohan; Kim, Bong-Soo. (2025). Perioperative Glucagon-like Peptide-1 Receptor Agonist Use Is Associated With Lower Pseudoarthrosis Rates Following Long-Segment Spinal Deformity Correction: A Propensity-Matched Analysis.. Global spine journal, 21925682251396965. https://doi.org/10.1177/21925682251396965