Srikusalanukul Jirawat, Chantarapanich Nattapon, Thitiyanaporn Chaiyakorn
Kasetsart University Veterinary Teaching Hospital Bangkhen Campus, Faculty of Veterinary Medicine, Kasetsart University, Bangkok 10900, Thailand.
Department of Mechanical Engineering, Faculty of Engineering at Sriracha, Kasetsart University, Sriracha Campus, Chonburi 20230, Thailand.
Vet Sci. 2025 Sep 14;12(9):888. doi: 10.3390/vetsci12090888.
The French Bulldog is a breed predisposed to lateral humeral intercondylar fractures. A transcondylar lag screw combined with an epicondylar pin is most commonly used for their repair. However, improper screw and pin placement is common. This study used a 3D-printed plastic bone model, designed from a 5-year-old 19.5 kg French Bulldog's humerus. Then, a 3D-printed drill guide was designed specifically for a lateral humeral condylar fracture. The bone models were divided into two groups: the first group included the use of the 3D-printed drill guide during the screw and pin placement, and the second group did not. After implantation, we compared the angle deviation of the transcondylar screw and the epicondylar pin, as well as the exit point translation of the transcondylar screw. The results showed differences between the two groups. The first group exhibited a lower angle deviation than the second group. Additionally, the exit point translation of the transcondylar screw was reduced in the drill guide group. The use of a custom-designed 3D-printed drill guide significantly improved the accuracy of the transcondylar screw and epicondylar pin placement. This advancement could reduce the incidence of postoperative complications.
法国斗牛犬是一种易患肱骨髁间外侧骨折的犬种。髁间拉力螺钉联合髁上针是其最常用的修复方法。然而，螺钉和针的放置不当很常见。本研究使用了一个3D打印的塑料骨模型，该模型是根据一只5岁、体重19.5千克的法国斗牛犬的肱骨设计的。然后，专门为肱骨髁外侧骨折设计了一个3D打印的钻孔导向器。将骨模型分为两组：第一组在螺钉和针放置过程中使用3D打印的钻孔导向器，第二组不使用。植入后，比较髁间螺钉和髁上针的角度偏差，以及髁间螺钉的出口点移位。结果显示两组之间存在差异。第一组的角度偏差低于第二组。此外，钻孔导向器组中髁间螺钉的出口点移位减少。使用定制设计的3D打印钻孔导向器显著提高了髁间螺钉和髁上针放置的准确性。这一进展可以降低术后并发症的发生率。
