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Pelvic Limb Kinematics and Surface Electromyography of the Vastus Lateralis, Biceps Femoris, and Gluteus Medius Muscle in Dogs with Hip Osteoarthritis

Authors

  • Barbara Bockstahler DVM,

    Corresponding author
    1. Clinic for Surgery and Ophthalmology, Section for Physiotherapy, University of Veterinary Medicine, Vienna, Austria
    2. Movement Science Group Vienna, Department of Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
    • Corresponding Author

      Barbara Bockstahler, DVM, Movement Science Group Vienna and Section for Physiotherapy, Department of Small Animals and Horses, University of Veterinary Medicine, Veterinaerplatz 1, A-1210 Vienna, Austria

      E-mail: barbara.bockstahler@vetmeduni.ac.at

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  • Cordula Kräutler DVM,

    1. Movement Science Group Vienna, Department of Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
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  • Peter Holler DVM,

    1. Movement Science Group Vienna, Department of Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
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  • Alexander Kotschwar,

    1. Movement Science Group Vienna, Department of Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
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  • Angela Vobornik DVM,

    1. Clinic for Avian, Reptile and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine, Vienna, Austria
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  • Christian Peham DME, PhD

    1. Movement Science Group Vienna, Department of Small Animals and Horses, University of Veterinary Medicine, Vienna, Austria
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Abstract

Objective

To measure the activity patterns of the vastus lateralis (VL), biceps femoris, and gluteus medius (GM) muscle at a walk in sound dogs and dogs with hip osteoarthritis (OA).

Animals

Dogs (n = 10) with hip OA and 7 clinically sound dogs.

Methods

Self-reflective markers and a high-speed camera system were used for kinematic measurements and surface electrodes were used for the electromyography (EMG). All measurements were performed on walking dogs. Maximal, minimal, and mean values of the joint angles were evaluated, together with the surface EMG data.

Results

In all muscles investigated, mean activity was significantly decreased during the early swing phase in dogs with hip OA. The VL and GM muscle of the clinically worse pelvic limb had significantly higher activity than the contralateral pelvic limb during early stance.

Conclusion

The muscles investigated were significantly affected by hip OA. This finding suggests that there is a more distinct resting phase of the muscles during swing and a higher activity during early stance.

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