Vet Comp Orthop Traumatol 2022; 35(04): A1-A14
DOI: 10.1055/s-0042-1758260
Podium Abstracts

Efficacy of Femoral MIPO Utilizing 3D-Printed Bone Models and Custom Surgical Guides: A Cadaveric Study

L. Scheuermann
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States
,
S. Kim
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States
,
D. Lewis
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States
,
M. Johnson
1   Department of Small Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States
,
A. Biedrzycki
2   Large Animal Clinical Sciences, College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States
› Author Affiliations
› Further Information
 

Introduction: Femoral fracture reduction utilizing minimally invasive plate osteosynthesis (MIPO) can be challenging and may be facilitated with 3D-printed guides and bone models. The objective of this study was to investigate the accuracy of femoral MIPO using a plate contoured to bone models with and without custom surgical guides. We hypothesized that MIPO assisted with customized 3D printed guides, fracture reduction system, and precontoured plate would result in superior reduction compared with use of an intramedullary pin and precontoured plate.

Materials and Methods: Virtual 3D femoral models were created using computed tomography images from five dog cadavers. Simulated mid-diaphyseal fractures were created and reduced. Reduced femoral models were 3D-printed and a plate was contoured. Custom surgical guides were designed and 3D-printed. Mid-diaphyseal osteotomies were created in the cadavers, and fractures were reduced with a precontoured plate and either an intramedullary pin or 3D-printed fracture reduction system. Computed tomographic scans were performed to assess femoral length and alignment. The number of fluoroscopic images acquired per procedure was recorded.

Results: Compared with the pre-operative virtual plan, post-operative femoral length and coronal, sagittal, and axial alignment changed less than 3 mm, 2 degrees, 3 degrees, and 4 degrees, respectively, in both groups. There was no difference in torsion and coronal angulation between groups (p >1.3). More fluoroscopic images were taken intra-operatively with the intramedullary pin group (p = 0.008).

Discussion/Conclusion: Fracture reduction with femoral MIPO was accurate when using precontoured plates and 3D-printed guides or intramedullary pin. Custom surgical guides may reduce fluoroscopy use.

Acknowledgements: This project was supported by the Edward DeBartolo Gift to the University of Florida.



Publication History

Article published online:
26 October 2022

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