3D-printed drill guide may improve canine lumbosacral fixation

Version 1 — Brief

A new Veterinary Surgery study reports that a 3D-printed, patient-specific drill guide improved the accuracy of percutaneous pedicle screw placement at the canine lumbosacral junction, at least at L7, in a cadaver model and one clinical case. The authors compared guide-assisted screw placement by a novice surgeon with freehand placement by an experienced surgeon across 13 Beagle cadavers, then applied the technique in a live clinical case. According to the study abstract, the guide reduced fluoroscopy exposure while keeping operative time comparable, suggesting a way to make minimally invasive lumbosacral fixation more reproducible in dogs. Earlier veterinary work has already shown that patient-specific drill guides can support safe, accurate lumbosacral fixation in dogs, including small clinical case series, and that 3D-printed guides have been gaining traction across canine spinal procedures. (frontiersin.org)

Why it matters: For veterinary professionals, the appeal is straightforward: pedicle screw placement in the lumbosacral region is technically demanding, and misplaced implants can threaten the spinal canal, nerve roots, or fixation stability. If a patient-specific guide can improve accuracy while reducing fluoroscopy use, it could lower radiation exposure for the surgical team, shorten the learning curve for less experienced surgeons, and expand the practical use of minimally invasive spinal stabilization in referral settings. That said, this remains early evidence: the new report is cadaver-heavy, includes just one clinical case, and follows earlier mixed findings in the field, including a 2022 study that did not find a significant accuracy advantage for one unilateral 3D-printed guide design over freehand placement. (frontiersin.org)

What to watch: Watch for larger live-patient studies that compare complication rates, implant stability, cost, and workflow against conventional fluoroscopic or open techniques. (pubmed.ncbi.nlm.nih.gov)