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Vertical movement symmetry of the withers in horses with induced forelimb and hindlimb lameness at trot

Rhodin, Marie and Persson Sjödin, Emma and Egenvall, Agneta and Serra Bragança, F. M. and Pfau, Thilo and Roepstorff, Lars and Weishaupt, Michael A. and Thomsen, M. H. and van Weeren, P. René and Hernlund, Elin (2018). Vertical movement symmetry of the withers in horses with induced forelimb and hindlimb lameness at trot. Equine veterinary journal. 50 , 818-824
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Official URL: https://doi.org/10.1111/evj.12844

Abstract

Background: The main criteria for lameness assessment in horses are head movement for forelimb lameness and pelvic movement for hindlimb lameness. However, compensatory head nod in horses with primary hindlimb lameness is a well-known phenomenon. This compensatory head nod movement can be easily misinterpreted as a sign of primary ipsilateral forelimb lameness. Therefore, discriminating compensatory asymmetries from primary directly pain-related movement asymmetries is a prerequisite for successful lameness assessment.
Objectives: To investigate the association between head, withers and pelvis movement asymmetry in horses with induced forelimb and hindlimb lameness.Study design: Experimental study.
Methods: In 10 clinically sound Warmblood riding horses, forelimb and hindlimb lameness were induced using a sole pressure model. The horses were then trotted on a treadmill. Three-dimensional optical motion capture was used to collect kinematic data from reflective markers attached to the poll, withers and tubera sacrale. The magnitude and side (left or right) of the following symmetry parameters, vertical difference in minimum position, maximum position and range-up were calculated for head, withers, and pelvis. Mixed models were used to analyse data from induced forelimb and hindlimb lameness.
Results: For each mm increase in pelvic asymmetry in response to hindlimb lameness induction, withers movement asymmetry increased by 0.35-0.55 mm, but towards the contralateral side. In induced forelimb lameness, for each mm increase in head movement asymmetry, withers movement asymmetry increased by 0.05-0.10 mm, in agreement with the head movement asymmetry direction, both indicating lameness in the induced forelimb.Main limitations: Results must be confirmed in clinically lame horses trotting overground.
Conclusions: The vertical asymmetry pattern of the withers discriminated a head nod associated with true forelimb lameness from the compensatory head movement asymmetry caused by primary hindlimb lameness. Measuring movement symmetry of the withers may, thus, aid in determining primary lameness location.

Authors/Creators:Rhodin, Marie and Persson Sjödin, Emma and Egenvall, Agneta and Serra Bragança, F. M. and Pfau, Thilo and Roepstorff, Lars and Weishaupt, Michael A. and Thomsen, M. H. and van Weeren, P. René and Hernlund, Elin
Title:Vertical movement symmetry of the withers in horses with induced forelimb and hindlimb lameness at trot
Series/Journal:Equine veterinary journal (0425-1644)
Year of publishing :2018
Volume:50
Page range:818-824
Number of Pages:7
Publisher:John Wiley & Sons Ltd on behalf of EVJ Ltd
ISSN:0425-1644
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Keywords:horse, compensatory lameness, withers asymmetry, gait analysis, objective lameness measurement
URN:NBN:urn:nbn:se:slu:epsilon-e-5069
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-5069
Additional ID:
Type of IDID
DOI10.1111/evj.12844
Web of Science (WoS)000445850500019
ID Code:15699
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
Department:(VH) > Dept. of Clinical Sciences
(VH) > Dept. of Anatomy, Physiology and Biochemistry
Deposited By: SLUpub Connector
Deposited On:17 Oct 2018 12:19
Metadata Last Modified:09 Sep 2020 14:17

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