Evaluation of a customized 3D-printed saw guide for tibial plateau leveling osteotomy: An ex vivo study

Seungeon Lee, Jinsu Kang, Namsoo Kim, Suyoung Heo

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

Objective: To determine whether a tibial plateau leveling osteotomy (TPLO) performed with a customized 3D-printed guide and jig is more accurate than the traditional technique using a jig alone. Study design: In vitro study. Sample population: Cadaveric canine pelvic limbs (n = 10) and 20 synthetic bone models. Methods: Tibial plateau leveling osteotomy using a jig with (n = 10) and without (n = 10) a customized 3D-printed guide were performed in bone models, and TPLO using a jig with (n = 5) and without (n = 5) a customized 3D-printed guide were performed in cadaveric limbs. Angulation of the osteotomy, angulation of the proximal jig pin, angular/torsional deformity and medial cortex damage were measured from photographs of the specimens and compared. Results: In the bone models, there were differences with and without the 3D guide for mean osteotomy inclination (−0.06° vs. –1.74°, P <.001), osteotomy torsion (5268 vs. 10 469 visible osteotomy pixels, P <.001), and medial cortical damage (2970 vs. 18 562 pixels, P <.001). In the cadaveric study, osteotomy inclination (−1.1° vs. 1.01°, P <.01), induced angular deformity (0.17° vs. –3.01°, P <.001) and angulation of the proximal jig pin (−0.27° vs. 0.80°, P <.001) differed between groups. Conclusion: The 3D-printed guide during TPLO resulted in slightly more accurate osteotomies and proximal jig pin placement, and reduced medial cortex damage. Clinical significance: A customized 3D-printed guide may improve intraoperative accuracy for TPLO, although the clinical significance of the small benefits is unknown.

Original languageEnglish
Pages (from-to)963-973
Number of pages11
JournalVeterinary Surgery
Volume51
Issue number6
DOIs
StatePublished - Aug 2022

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