Objectives To describe the implant characteristics and surgical application of a custom-made trochlear ridge prosthesis (TRP) and to report clinical outcomes in dogs affected by patellar luxation treated with TRP.

Study design Dogs affected by patellar luxation underwent computed tomography. A specific canine bone anatomical replica, a cutting guide, and a TRP were designed and provided for surgery. Surgical records, clinical and radiographic reassessments, complications, pre- and postoperative lameness, type and degree of patellar luxation, and TRP and patellar position after surgery were reviewed. Clinical outcomes were defined as full, acceptable, or unacceptable function.

Results The TRP was implanted in 60 femoral trochleae: 48 unilateral and 12 bilateral. Successful correction of patellar luxation was achieved in 59/60 cases. TRP was applied with other surgical techniques in 36/60 of the cases and as the only surgical procedure in 24/60 cases. Overall, three complications were observed: two minor and one major (patellar luxation recurrence). Neither implant loosening nor infection was observed. The mean radiographic follow-up was 3.8 months. At the time of the final follow-up, 57/60 cases were scored as fully functional.

Conclusion The TRP application either alone or in combination with other surgical techniques allowed for correction of patellar luxation and improvement in preoperative lameness with nominal complications. TRP could represent a potentially reliable alternative to trochleoplasty.

目的 描述定制滑车嵴假体 (TRP) 的植入特性和手术应用，并报告接受 TRP 治疗的受髌骨脱位影响的犬的临床结果。

研究设计 对受髌骨脱位影响的狗进行计算机断层扫描。为手术设计并提供了特定的犬骨解剖复制品、切割导板和 TRP。对手术记录、临床和影像学重新评估、并发症、术前和术后跛行、髌骨脱位的类型和程度以及术后 TRP 和髌骨位置进行了回顾。临床结果被定义为完整的、可接受的或不可接受的功能。

结果 TRP 植入 60 个股骨滑车：单侧 48 个，双侧 12 个。59/60 例成功矫正髌骨脱位。36/60 的病例中 TRP 与其他手术技术一起应用，24/60 的病例中 TRP 作为唯一的手术方法。总体而言，观察到三种并发症：两种轻微并发症和一种严重并发症（髌骨脱位复发）。未观察到种植体松动或感染。平均放射学随访时间为 3.8 个月。在最后一次随访时，57/60 的病例被评分为功能齐全。

结论 TRP 单独应用或与其他手术技术联合应用可以矫正髌骨脱位并改善术前跛行和名义并发症。TRP 可能是滑车成形术的一种潜在可靠替代方案。