Peer-reviewed veterinary case report
How dogs of different sizes change their weight when limping on one
By Wagmeister, Patrick et al.·Published in Veterinary and comparative orthopaedics and traumatology : V.C.O.T·2022·Clinic for Small Animal Surgery and Reproduction, Germany·View original on PubMed →
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Original publication title: Compensatory Changes in Ground Reaction Forces in Small and Large Breed Dogs with Unilateral Hindlimb Lameness in Comparison to Healthy Dogs.
- Species:
- dog
Plain-English summary
A group of small to medium-sized dogs with a leg injury (specifically a torn cranial cruciate ligament) was studied to see how their walking patterns changed compared to healthy dogs. The research found that both small and large breed dogs with the same injury shifted their weight away from the hurt leg and relied more on the opposite side. Interestingly, even though these two groups started with different weight distributions, they both showed similar compensatory changes when they limped. This suggests that regardless of size, dogs adapt in similar ways when dealing with a leg injury.
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Abstract
OBJECTIVE:  The aim of this study was to investigate whether small- to medium-sized dogs with a naturally occurring unilateral hindlimb lameness show the same compensatory changes in ground reaction forces as large-breed dogs and how the changes are displayed compared with healthy small- to medium-sized dogs. STUDY DESIGN:  Small- to medium-sized dogs ( = 15) and large-breed dogs ( = 16) with unilateral rupture of the cranial cruciate ligament were examined. The kinetic parameters peak vertical force and vertical impulse of the two groups were compared with each other and compared with healthy Beagles ( = 15) and with healthy Labrador Retrievers ( = 17), respectively. RESULTS:  The healthy Beagle group showed a significantly higher weight loading on the forelimbs compared with the healthy Labrador group. The affected groups in comparison with the corresponding healthy groups showed a higher load on the non-affected body half and a significant lower weight bearing on the affected limb. Comparing the two affected groups, no significant difference could be found. CONCLUSION:  Despite a substantially different initial situation regarding weight distribution of the examined small- to medium-sized dogs and large dogs, a unilateral hindlimb lameness leads to the same compensatory changes (cranial and lateral shift of the body mass centre).
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/34666414/