Original Article – Research
Pelvic Limb Kinematics and Surface Electromyography of the Vastus Lateralis, Biceps Femoris, and Gluteus Medius Muscle in Dogs with Hip Osteoarthritis
Article first published online: 20 DEC 2011
© Copyright 2011 by The American College of Veterinary Surgeons
Volume 41, Issue 1, pages 54–62, January 2012
How to Cite
Bockstahler, B., Kräutler, C., Holler, P., Kotschwar, A., Vobornik, A. and Peham, C. (2012), Pelvic Limb Kinematics and Surface Electromyography of the Vastus Lateralis, Biceps Femoris, and Gluteus Medius Muscle in Dogs with Hip Osteoarthritis. Veterinary Surgery, 41: 54–62. doi: 10.1111/j.1532-950X.2011.00932.x
- Issue published online: 23 JAN 2012
- Article first published online: 20 DEC 2011
- Manuscript Accepted: JUN 2011
- Manuscript Received: AUG 2010
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).
Dogs (n = 10) with hip OA and 7 clinically sound dogs.
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.
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.
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.