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CC BY 4.0 · VCOT Open 2023; 06(01): e52-e55
DOI: 10.1055/s-0042-1757347
Brief Communication

Tibial Tuberosity Transposition Tool Technique in Combination with Distal Femoral Lateral Closing Wedge Osteotomy for Patellar Luxation Treatment in Five Dogs

Eloy Henrique Pares Curuci
1   Ortopediavet—Eloy Curuci and team, São Paulo, Brazil
,
Ana Carolina Valentim Hespanha 
2   Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Luis Gustavo Gosuen Gonçalves Dias
2   Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
,
Bruno Watanabe Minto 
2   Department of Veterinary Clinic and Surgery, School of Agricultural and Veterinary Sciences, São Paulo State University, Jaboticabal, São Paulo, Brazil
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Abstract

Medial patellar luxation is a multifactorial condition resulting from a misalignment of the stifle extensor mechanism. Several techniques have been described for correcting this condition, depending on the specific morphological changes identified. This case series describes the combination of tibial tuberosity transposition tool techniques and distal lateral femoral closing wedge osteotomy in the treatment of dogs with medial patellar luxation. A combination of these two techniques was used in five dogs with varying degrees of medial luxation of the patella resulting from distal femoral varus and less than 20 degrees distal external torsion of the tibia. The combination of techniques allowed the alignment of the stifle extensor mechanism and corrected medial patellar luxation in all dogs. Radiographic bone union occurred in all dogs, with a mean time of 30 ± 2 days for tibial osteotomy and 48 ± 16 days for the femur. There was no recurrence of patellar dislocation, and no complications developed in any animal during a 1-year-long observation period. This case series demonstrates that the combination of tibial tuberosity transposition tool techniques and distal lateral femoral closing wedge osteotomy can be an effective treatment for medial patellar luxation associated with distal femoral varus with external tibial torsion less than 20 degrees.

Keywords

misalignment - femoral varus - external tibial torsion - medial patellar luxation - dog

Authors' Contributions

E. H. P. C., A.C.V.H., and B.W.M. contributed to the conception of study, study design, data acquisition, data analysis and interpretation. A.C.V.H., L.G.M., and B.W.M. contributed to the data analysis and discussion of results. All authors wrote, revised and approved the submitted manuscript.




Publication History

Received: 23 March 2021

Accepted: 11 June 2022

Article published online:
21 February 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution License, permitting unrestricted use, distribution, and reproduction so long as the original work is properly cited. (https://creativecommons.org/licenses/by/4.0/)

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