European spine journal : official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society · 2026
Differential impact of pre-operative tirzepatide compared to glucagon-like-peptide-1 single receptor agonists on outcomes of spinal fusion surgery in obese patients.
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Sacks Gregory Isaac, Meydan Yoli, Lebens Ryan, Mushlin Harry M
Аннотация
STUDY DESIGN: Retrospective, propensity score-matched cohort study.
PURPOSE: To determine if outcomes following spinal fusion differ between obese patients prescribed Tirzepatide and single receptor glucagon-like-peptide-1 (srGLP-1) agonists preoperatively.
METHODS: Data was collected from the TriNetX Research Network. Obese patients undergoing spinal fusion that were prescribed tirzepatide alone in the 6 months preceding surgery, were matched 1:1 based on demographics, comorbidities, medication use, and surgical procedure with those prescribed an srGLP-1 agonist alone in the year prior to surgery. Early (90-day) outcomes included UTI, thrombotic or embolic events, and AKI. Long-term outcomes (2 years) include revision, pseudarthrosis, and post-laminectomy syndrome.
RESULTS: A total of 918 matched pairs were analyzed. At 90-days after surgery, tirzepatide patients experienced fewer embolic or thrombotic events (RR 0.41, 95% CI 0.22-0.76, p = 0.003), lower UTI rates (RR 0.47, 95% CI 0.32-0.69, p < 0.001) and less AKIs (RR 0.42, 95% CI 0.26-0.69, p < 0.001) compared to srGLP-1 patients. At 2 years after surgery tirzepatide users had fewer instances of revision (RR 0.65, 95% CI 0.49-0.87, p = 0.003), pseudarthrosis (RR 0.41, 95% CI 0.25-0.68, p < 0.001), post-laminectomy syndrome (RR 0.58, 95% CI 0.31-0.68, p < 0.001) compared to srGLP-1 users.
CONCLUSIONS: In a propensity-matched analysis, obese spinal fusion patients treated with Tirzepatide compared to srGLP-1 agonists, had lower rates of early postoperative thrombotic and embolic events, UTIS, and AKIs. Additionally, the Tirzepatide fusion cohort had significantly lower rates of pseudarthrosis, revision surgery, and post-laminectomy syndrome 2 years after surgery. These findings support the potential protective physiological impact of Tirzepatide over srGLP-1s in obese patients undergoing spinal fusion.
PURPOSE: To determine if outcomes following spinal fusion differ between obese patients prescribed Tirzepatide and single receptor glucagon-like-peptide-1 (srGLP-1) agonists preoperatively.
METHODS: Data was collected from the TriNetX Research Network. Obese patients undergoing spinal fusion that were prescribed tirzepatide alone in the 6 months preceding surgery, were matched 1:1 based on demographics, comorbidities, medication use, and surgical procedure with those prescribed an srGLP-1 agonist alone in the year prior to surgery. Early (90-day) outcomes included UTI, thrombotic or embolic events, and AKI. Long-term outcomes (2 years) include revision, pseudarthrosis, and post-laminectomy syndrome.
RESULTS: A total of 918 matched pairs were analyzed. At 90-days after surgery, tirzepatide patients experienced fewer embolic or thrombotic events (RR 0.41, 95% CI 0.22-0.76, p = 0.003), lower UTI rates (RR 0.47, 95% CI 0.32-0.69, p < 0.001) and less AKIs (RR 0.42, 95% CI 0.26-0.69, p < 0.001) compared to srGLP-1 patients. At 2 years after surgery tirzepatide users had fewer instances of revision (RR 0.65, 95% CI 0.49-0.87, p = 0.003), pseudarthrosis (RR 0.41, 95% CI 0.25-0.68, p < 0.001), post-laminectomy syndrome (RR 0.58, 95% CI 0.31-0.68, p < 0.001) compared to srGLP-1 users.
CONCLUSIONS: In a propensity-matched analysis, obese spinal fusion patients treated with Tirzepatide compared to srGLP-1 agonists, had lower rates of early postoperative thrombotic and embolic events, UTIS, and AKIs. Additionally, the Tirzepatide fusion cohort had significantly lower rates of pseudarthrosis, revision surgery, and post-laminectomy syndrome 2 years after surgery. These findings support the potential protective physiological impact of Tirzepatide over srGLP-1s in obese patients undergoing spinal fusion.