0022113: Radiographic Analysis of Tibial Plateau Angle Development in Maturing Labrador Retriever Dogs

Grant Status: Closed

Grant Amount: $8,732.32
Alan Lipowitz, DVM; University of Minnesota
March 6, 2002 - March 31, 2004

Sponsor(s): Labrador Retriever Club, National Amateur Retriever Club, Orthopedic Foundation for Animals

Breed(s): Labrador Retriever
Research Program Area: Musculoskeletal Conditions and Disease
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The angle of the tibial plateau has been implicated as a predisposing or contributing factor to cranial cruciate ligament (CCL) rupture in the dog. It is believed that as the angle increases greater stress is applied to the CCL thus causing it to weaken and then break. A recent study has shown that dogs with a spontaneously ruptured CCL have a significantly greater tibial plateau angle (TPA) than breed, sex, weight, and age matched dogs that did not have a CCL rupture. The normal TPA for any breed of dog has not been defined. And, it is not know at what age the TPA of a dog can be reliably measured. The purpose of this study is to determine the youngest age at which the TPA can be reliably measured in a group of growing Labrador Retrievers. This information could lead to a better understanding of the development of the tibial plateau and also to potentially serve as a method to screen dogs that might be predisposed to CCL rupture. This information could also serve as a starting point for the investigation of the genetic implications of CCL rupture in dogs.


Odders, J. W., Jessen, C. R., & Lipowitz, A. J. (2004). Sequential measurements of the tibial plateau angle in large-breed, growing dogs. American Journal of Veterinary Research, 65(4), 513–518. https://doi.org/10.2460/ajvr.2004.65.513

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