Clinical outcomes and complications after proximal tibial detorsional osteotomy for patellar luxation in dogs: A multicenter retrospective study.

PTDO successfully restores patellar tracking in 96% of cases with acceptable complication rates.

This multicenter retrospective study evaluated 53 stifles in 50 dogs undergoing proximal tibial detorsional osteotomy (PTDO) for patellar luxation (PL). Medial PL was present in 98% of cases with preoperative tibial torsion averaging 8.8° external rotation. Patellar tracking was successfully restored in 96% of cases, with 72% achieving full limb function and 24% acceptable function. Radiographic union occurred within 2.7 months on average. Overall complications were reported in 33% of cases (11% major, 22% minor), with most major complications being implant-related and successfully managed through revision surgery. The study demonstrates that PTDO effectively corrects abnormal tibial torsion in dogs with PL, making it a reliable surgical technique. Short-term radiographic follow-up averaged 3 months. The results support PTDO as a valuable treatment option for tibial torsion-associated patellar luxation in canine patients.

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