Contribution of Habitual Activity to Cruciate Ligament Rupture in Labrador Retrievers

Abstract

Objective The aim of this study was to describe the contribution of signalment and habitual activity in the development of cruciate ligament rupture (CR) in Labrador Retrievers.

Study Design Four hundred and twelve client-owned purebred Labrador Retrievers were recruited. Dogs were assigned either as affected with CR or as controls based on signalment, physical examination and radiographic evidence of disease. Clients were asked to complete a questionnaire related to signalment, concurrent disease and a questionnaire pertaining to their dog's activity before development of CR or general activity during the dog's most active years.

Results Habitual activity was not significantly different between dogs affected with CR and controls. There was no significant difference in neuter status or body weight between CR affected dogs and controls. Labrador Retrievers with a yellow coat, and Labradors that did not maintain an optimal body weight in the opinion of their veterinarian were at increased risk of developing CR.

Conclusions Habitual activity level is not a risk factor for development of CR in Labrador Retrievers. Our study did not show neuter status, sex or body weight to be risk factors for CR. However, coat colour and not sustaining optimal body condition are significant risk factors for CR.

Keywords

habitual activity - dog - cruciate ligament rupture - questionnaire

Authors’ Contributions

Hannah M. Terhaar assisted in data analysis & interpretation, drafting of the manuscript, approval of the manuscript and is publicly accountable for relevant content. Peter Muir assisted in conception of the study, study design, acquisition of data, data analysis & interpretation, drafting of the manuscript, approval of the manuscript and is publicly accountable for relevant content. Lauren A. Baker assisted in acquisition of data, data analysis & interpretation approval of the manuscript and is publicly accountable for relevant content. Emily E. Binversie assisted in acquisition of data, approval of the manuscript and is publicly accountable for relevant content. Jacqueline Chi assisted in acquisition of data, approval of the manuscript and is publicly accountable for relevant content. Susannah J. Sample assisted in conception of the study, study design, acquisition of data, data analysis & interpretation, drafting of the manuscript, approval of the manuscript and is publicly accountable for relevant content.

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