Creation of individual guides for corrective osteotomy of the tibia in dogs

A methodology was developed to create a customized guide for Cranial Closing Wedge Osteotomy (CCWO) in dogs using additive technology. The study included a comparative evaluation of the accuracy of tibial angle correction and the duration of surgery with and without a customized osteotomy guide. The pelvic limbs of six cadaver dogs of different breeds and weight categories were used in the experiment. Postoperative Tibial Plate Angle (TPA) and mechanical medial proximal tibial plate angle (mMPTA) were analyzed in both groups to evaluate the effectiveness of the method. In the group with a guide, the mean difference between expected and postoperative TPA and mMPTA angles was 0.58±0.28° and 0.21±0.06°, whereas these values were significantly higher in the group without a guide, 0.99±0.79° and 1.13±0.50°, respectively. In addition, the use of a customized guidewire significantly shortened the duration of surgical intervention. The average time of CCWO surgery with the use of the guidewire was 29.83±4.98 min, which is 64.56% less than that of classical CCWO without the guidewire (84.17±12.97 min). The developed method allows to perform precision planning of osteotomy, providing high accuracy of surgical intervention and significantly reducing the operation time. The introduction of individual guidewires based on 3D modeling and printing contributes to the optimization of the CCWO technique and can improve the efficiency of treatment of dogs with excessive tibial plateau inclination angle.

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