Evaluation of Cut Accuracy and Cis Cortical Damage for Tibial Plateau Leveling Osteotomy Performed with and without Aid of a Novel Saw Guide: An In Vitro Study

Abstract

Objectives: To compare osteotomy orientation relative to the sagittal and transverse planes of the tibia, and cis cortical damage for tibial plateau leveling osteotomy (TPLO) performed with the following aids: (1) Synthes TPLO jig and saw guide, (2) Slocum TPLO jig with ancillary Kirschner wires (SlocumK), and (3) Slocum jig alone. Study Design: In vitro study on Synbone® bone models and canine cadavers. Animals: Cadaveric pelvic limbs pairs (n = 30). Methods: TPLO was performed on 30 Synbone tibias with either the Slocum jig (n = 10), SlocumK (10), or Synthes jig (10). Synbones were analyzed to quantify osteotomy inclination, torsion, craniocaudal positioning, and medial cortical bone damage. Osteotomies were performed on cadaveric tibias and CT reconstruction used to assess the same osteotomy parameters. Results: Significant differences in Synbone tibial osteotomy inclination (P