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Open Access
CC BY 4.0 · VCOT Open 2022; 05(02): e41-e49
DOI: 10.1055/s-0042-1750035
Case Report

Lateral Patellar Luxations following Bilateral Hip Joint Replacement in a Dog

Autoren

  • Angharad Simlett-Moss   *

    1   School of Veterinary Science, University of Liverpool, Small Animal Teaching Hospital, Neston, United Kingdom of Great Britain and Northern Ireland

  • Gareth Arthurs

    2   Arthurs Orthopaedics, Towcester Veterinary Centre, Towcester, United Kingdom of Great Britain and Northern Ireland

  • Frederike Schiborra

    1   School of Veterinary Science, University of Liverpool, Small Animal Teaching Hospital, Neston, United Kingdom of Great Britain and Northern Ireland

  • Eithne Comerford 

    1   School of Veterinary Science, University of Liverpool, Small Animal Teaching Hospital, Neston, United Kingdom of Great Britain and Northern Ireland
    3   Department of Musculoskeletal and Ageing Sciences, Institute of Life Course and Medical Sciences, University of Liverpool, Liverpool, United Kingdom of Great Britain and Northern Ireland

Funding None.
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Abstract

A 2-year-old male neutered crossbreed was presented with a 7-month history of left pelvic limb lameness. Following a diagnosis of bilateral hip dysplasia, staged hybrid total hip replacements (THR) were performed 16 months apart. An ipsilateral grade II lateral patellar luxation (LPL) developed within 24 hours after each THR. Both LPLs were successfully treated by block recession sulcoplasty. Subjective gait analysis showed an abnormal pelvic limb gait following each THR. Clinical examination detected a grade II LPL on each operated limb. Computed tomography of both pelvic limbs revealed mild trochlear sulcus hypoplasia but no other skeletal abnormalities. Trochlear block recession sulcoplasty was performed 10 and 4 weeks respectively after THR. Long-term follow-up 12 months after the last surgery found minimal (0–1/10) lameness, no pain on clinical examination in both PLs and an overall low client-based metrology instrument mobility score of 2 (Liverpool Osteoarthritis in Dogs). This case report documents that in predisposed dogs, with hypoplastic trochlear ridges, LPL can occur secondary to THR and can be successfully managed by standard techniques to address the luxation. Furthermore, despite anecdotal verbal reports of medial patellar luxation occurring secondary to THR in dogs, this is the first published report of the management of any patellar luxation subsequent to THR.

Keywords

total hip replacement - lateral patellar luxation - dogs

Ethical Statement

Permission to use the case details in this case report was given with full owner consent and used under generic institutional ethical permission for use of clinical case material in research.


Authors' Contributions

It is with great sadness and regret that ASM sadly passed away in July 2020 and therefore this manuscript is being submitted in her memory and as testament to her great diligence and care with her patients.


ASM, EC, FS and GA contributed substantially to the conception, study design or acquisition of data, as well as participation in the analysis and interpretation of data. ASM, EC and GA were involved in drafting of the article or revising it critically for important intellectual content. EC, GA and FS (ASM sadly passed away in July 2020) were involved in approval of the submitted version of the manuscript, all revised versions and the final version to be published. EC, GA and FS agreed to be publicly accountable for the appropriate portions of the content.


* It is with great sadness and regret that ASM sadly passed away in July 2020 and therefore this manuscript is being submitted in her memory and as testament to her great diligence and care with her patients.


Supplementary Material



Publikationsverlauf

Eingereicht: 19. Juli 2021

Angenommen: 29. März 2022

Artikel online veröffentlicht:
12. Juli 2022

© 2022. 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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