Kinetic gait compensation in a small breed dog with experimentally induced lameness
2024
Lee, S.H.
This study investigates the kinetic compensatory gait changes in a small-sized dog (4.2 kg, 2-year-old spayed female poodle) with experimentally induced lameness. Reversible lameness was induced by applying silicone pads to the dog's forelimbs and hindlimbs. A force plate analysis system was used to measure Peak Vertical Force (PVF) and Symmetry Index (SI) during normal and induced lameness conditions. The results showed significant reductions in PVF in the induced limbs. Specifically, the left forelimb’s PVF decreased from 139.00 ± 9.85% in normal gait to 88.00 ± 19.05% after lameness induction, and the right forelimb’s PVF decreased from 130.33 ± 5.51% to 78.00 ± 18.52%. In contrast, compensatory increases were observed in the contralateral limbs, with the PVF of the contralateral forelimb increasing to 125.33 ± 1.15%. Similar patterns were observed in the hindlimbs, although the changes were less pronounced. The Symmetry Index (SI) values also increased in the induced limbs, particularly in the forelimbs (ILF: 53.10 ± 22.85%, IRF: 72.17 ± 15.08%), indicating greater asymmetry. These results suggest that forelimb lameness in small dogs results in more significant compensatory gait changes than hindlimb lameness.
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