Modified cranial closing wedge ostectomy in 169 stifles: considerations on potential factors associated with
1Department Clinical Science & Services, Royal Veterinary College, The Queen Mother Hospital for Animals, University of London, Hatfield, UK.
The Journal of Small Animal Practice
|February 25, 2026
Summary
This study investigated factors contributing to implant failure after cranial closing wedge ostectomy in dogs with cranial cruciate ligament disease. While no specific factor showed statistical significance, careful consideration of implant size and placement is advised.
Area of Science:
- Veterinary Orthopedics
- Canine Surgery
- Biomechanical Engineering
Background:
- Cranial cruciate ligament disease is common in dogs.
- Surgical stabilization often involves tibial osteotomies.
- Understanding construct failure is crucial for improving outcomes.
Purpose of the Study:
- To identify risk factors for implant construct failure.
- To analyze outcomes of unilateral modified cranial closing wedge ostectomy.
- To evaluate the role of various surgical parameters in preventing failure.
Main Methods:
- Retrospective analysis of hospital and radiographic data.
- Comparison of construct failure cases with matched controls.
- Assessment of plate size, position, tibial anatomy, and fixation methods.
Main Results:
- 169 stifles analyzed; 12% major complication rate, 8% re-operation rate.
- No significant difference found for plate position, tibial flare, adjunctive fixation, or tibial plateau angle.
- Larger plate sizes were used than typically recommended for tibial plateau leveling osteotomy.
Conclusions:
- The lack of statistical significance may indicate a Type II error.
- Plate size, plate position, proximal tibial shape, and adjunctive fixation warrant consideration.
- Further research may elucidate specific risk factors for construct failure.
