Petchell et al: An in silico comparison of a novel CORA-based cranial closing wedge ostectomy methodology with three other techniques
Veterinary Surgery 7, 2025

🔍 Key Findings

• The CORA-based cranial closing wedge ostectomy (CCWOCORA) consistently achieved the target postoperative TPA of 5° across all tibial morphologies.
• CCWOCORA produced significantly less variability in postoperative TPA compared to other methods (TPA range: 5.00–5.00°; p < .001).
• Mechanical axis advancement (MAA) was precisely controlled at 3° in CCWOCORA, leading to greater surgical predictability.
• Other techniques (e.g., CCWO_TPA, CCWO_TPA–5, CCWO_ISO) showed greater variance in TPA, MAA, and tibial length.
• In small-breed dogs, increasing the MAA from 3° to 5° did not affect TPA outcomes, but increased proximal bone stock, improving feasibility.
• Wedge angles and tibial length changes varied by method, but CCWOCORA maintained length better than TPA-based methods.
• The technique allows preoperative planning of both desired MAA and TPA, enhancing predictability and customization.
• CORA methodology enables precise geometric correction and alignment of mechanical axes, reducing reliance on trial-and-error alignment.