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Vet Comp Orthop Traumatol 2023; 36(02): 068-074
DOI: 10.1055/s-0042-1757592
Original Research

Ideal Anchor Points for Patellar Anti-rotational Sutures for Management of Medial Patellar Luxation in Dogs: A Radiographic Survey

Parisa Mazdarani 
1   College of Veterinary Medicine, University of Florida, Gainesville, Florida, United States
,
James Edward Miles 
2   Department of Veterinary Clinical Sciences, University of Copenhagen, Frederiksberg C, Denmark
› Institutsangaben Funding This study received financial aid from the Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen.
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Abstract

Objective The aim of this study was to identify the ideal anchor point for patellar anti-rotational sutures for adjunctive stabilization of medial patellar luxation in both small and large breed dogs.

Study Design Retrospective radiographic survey was performed on 110 stifles from 101 dogs. Radiographs were grouped based on patient weight (≤15 kg; >15 kg) and diagnosis (medial patellar luxation, cranial cruciate ligament rupture, and normal joints). Radiographic measurements included: the proximal, middle, and distal points of the trochlear ridge, the caudal aspect of Blumensaat's line (roof of the intercondylar notch), the centre of the lateral fabella, as well as the “best-fit” centre of a circle overlying the trochlea. These landmark coordinates were used to calculate radii for comparison, and for scaling between joints.

Results Use of the fabellar centre resulted in larger radii (corrected p <0.001) than those from the best-fit circle centre for all but one combination of patient group and trochlear end point locations. Using the best-fit circle centre, radius variation was less marked than with the fabellar centre. Significant differences in location for centres of the best-fit circle and fabella were seen across all patient categories (Pillai's trace p <0.001).

Conclusion The fabella is unlikely to be the best choice for anchoring a patellar anti-rotational suture. Use of the best-fit circle centre to place a suture anchor should be preferred to maximise suture isometry during joint flexion and extension in large and small breed dogs.

Keywords

dogs - stifle joint - patellar luxation - patellar anti-rotational suture - radiography

Data Availability

Data related to this study are available at: https://doi.org/10.6084/m9.figshare.20080523.v1


Authors' Contributions

J.E.M. conceptualized the study, P.M. designed the study, P.M. acquired the data, J.E.M. and P.M. analysed and interpreted the data, drafted the manuscript and are accountable for the relevant content.


Supplementary Material



Publikationsverlauf

Eingereicht: 28. Januar 2022

Angenommen: 27. August 2022

Artikel online veröffentlicht:
31. Dezember 2022

© 2022. Thieme. All rights reserved.

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