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Proceedings of the 66th Annual Convention of the American Association of Equine Practitioners

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Proceedings of the 66 th Annual

Convention of the

American Association of Equine Practitioners

Program Chair: Scott A. Hay, DVM

ACKNOWLEDGMENTS

Charlie Scoggin, DVM, MS, DACT, Educational Programs Committee Chair Carey M. Ross, Scientific Publications Coordinator

Published by the American Association of Equine Practitioners

ISSN 0065-7182

© American Association of Equine Practitioners, 2020

AAEP PROCEEDINGS ! Vol. 66 ! 2020 i

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Surgical Management of Subchondral Cystic Lesions of the Medial Femoral Condyle with an Absorbable Implant

Paolo Ravanetti, DVM; Antoine Lechartier, DVM, DECVS; Muriel Hamon, DVM;

Enrica Zucca, DVM, PhD; Cole Sandow, DVM, MS, DACVS-LA*;

True Baker, DVM, DACVS; and Michael Spirito, DMV

A transcortical extra-articular approach to facilitate curettage, irrigation, and placement of an absorbable implant to treat subchondral cystic lesions of the medial femoral bone condyle may be a useful surgical treatment option to improve lameness as well as the radiographic appearance of subchondral cystic lesions. Authors’ addresses: Equitecnica Equine Hospital, Parma, Italy (Rava- netti); Clinique Veterinaire Equine Me´heudin, Ecouche´, France (Lechartier, Hamon); Universita´

Stadi Milano, Department of Health, Animal Science, and Food Safety, Lodi, Italy (Zucca); Hagyard Equine Medical Institute, 4250 Iron Works Pike, Lexington, KY 40511 (Sandow, Spirito, Baker);

e-mail: csandow@hagyard.com. *Corresponding and presenting author. © 2020 AAEP.

1. Introduction

Subchondral cystic lesions of the medial femoral condyle may be a source of lameness, resulting in poor performance, and can negatively influence buy- ers’ decisions on horses sold at public auction.

2. Materials and Methods

Horses with subchondral cystic lesions of the medial femoral condyle were identified on survey radio- graphs prior to public auction or during lameness examination. Fifty-seven horses met inclusion cri- teria and were 10–26 months of age. The surgical procedure involved curettage of and placement of an absorbable implant in the cyst under radiographic guidance. Follow-up lameness and radiographic

examinations were performed at 1, 2, 3, and 4 months postoperatively.

3. Results

There was an 80% radiographic reduction in the size of the cyst in 53/57 horses (92%). For the cases with lameness follow up, 47/48 horses (97.9%) were sound up to 4 months after surgery. Two cases required repeat operation due to implant migration.

4. Discussion

The surgical technique described here may be a use- ful option for the management of subchondral cystic lesions of the medial femoral condyle in juvenile horses. The multicenter nature and some subjective assessments have inherent limitations.

AAEP PROCEEDINGS ! Vol. 66 ! 2020 457

NEW INNOVATIONS AND TIMELY CONSIDERATIONS IN EQUINE LAMENESS AND SURGERY

Research Abstract!for more information, contact the corresponding author NOTES

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Acknowledgments Declaration of Ethics

The Authors have adhered to the Principles of Vet- erinary Medical Ethics of the AVMA.

Conflict of Interest

The Authors have no conflicts of interest.

458 2020 ! Vol. 66 ! AAEP PROCEEDINGS

NEW INNOVATIONS AND TIMELY CONSIDERATIONS IN EQUINE LAMENESS AND SURGERY

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