Effect of heel elevation on breakover phase in horses with laminitis.
Heel elevation
Hoof kinetics
Hoof™ system
Horse
Laminitis
Journal
BMC veterinary research
ISSN: 1746-6148
Titre abrégé: BMC Vet Res
Pays: England
ID NLM: 101249759
Informations de publication
Date de publication:
01 Oct 2020
01 Oct 2020
Historique:
received:
12
02
2020
accepted:
15
09
2020
entrez:
2
10
2020
pubmed:
3
10
2020
medline:
4
5
2021
Statut:
epublish
Résumé
In a laminitic horse, the maximal loading of the toe region occurs during the breakover phase. To date, no kinetic data demonstrates the effect of supportive orthopaedic therapy in horses with laminitis on breakover phase. Thus, the purpose of this study was to examine the effect of heel elevation on the breakover phase. Eight horses with acute laminitis treated medically as well as with application of a hoof cast with heel wedge (HCHW) were included in this study. Immediately following cessation of clinical signs of acute laminitis, two measurements using the Hoof™ System were taken: the first with HCHW and the second immediately following removal of the HCHW, i.e. in barefoot condition (BFC). The hoof print was divided into three regions: toe, middle hoof, and heel. Kinetic parameters included vertical force (VF), stance duration, contact area (CA) for all hoof regions during stance phase, duration of breakover, VF in the toe region at onset of breakover and location of centre of force. The VF and CA were higher in the heel region (63 and 61%, respectively) and decreased significantly after removal of the HCHW (43 and 28% after removal, respectively). The breakover phase in horses with HCHW lasted 2% of stance phase and was significantly shorter than that in BFC, which lasted 6% of stance phase. The VF at onset of breakover for the toe region in horses with HCHW was significantly lower than that in BFC. The centre of the force was located at the heel region in all horses with the HCHW, and at the middle the hoof region in BFC. Heel elevation in horses with laminitis as examined on a concrete surface significantly shortens breakover phase and decreases the vertical force in the toe region during breakover. HCHW provides adequate support to the palmar hoof structures by increasing the contact area in the heel region and incorporating the palmar part of frog and sole into weight bearing, thus decreasing the stress on the lamellae. Hoof cast with heel elevation could be a beneficial orthopaedic supportive therapy for horses suffering from acute laminitis.
Sections du résumé
BACKGROUND
BACKGROUND
In a laminitic horse, the maximal loading of the toe region occurs during the breakover phase. To date, no kinetic data demonstrates the effect of supportive orthopaedic therapy in horses with laminitis on breakover phase. Thus, the purpose of this study was to examine the effect of heel elevation on the breakover phase. Eight horses with acute laminitis treated medically as well as with application of a hoof cast with heel wedge (HCHW) were included in this study. Immediately following cessation of clinical signs of acute laminitis, two measurements using the Hoof™ System were taken: the first with HCHW and the second immediately following removal of the HCHW, i.e. in barefoot condition (BFC). The hoof print was divided into three regions: toe, middle hoof, and heel. Kinetic parameters included vertical force (VF), stance duration, contact area (CA) for all hoof regions during stance phase, duration of breakover, VF in the toe region at onset of breakover and location of centre of force.
RESULTS
RESULTS
The VF and CA were higher in the heel region (63 and 61%, respectively) and decreased significantly after removal of the HCHW (43 and 28% after removal, respectively). The breakover phase in horses with HCHW lasted 2% of stance phase and was significantly shorter than that in BFC, which lasted 6% of stance phase. The VF at onset of breakover for the toe region in horses with HCHW was significantly lower than that in BFC. The centre of the force was located at the heel region in all horses with the HCHW, and at the middle the hoof region in BFC.
CONCLUSIONS
CONCLUSIONS
Heel elevation in horses with laminitis as examined on a concrete surface significantly shortens breakover phase and decreases the vertical force in the toe region during breakover. HCHW provides adequate support to the palmar hoof structures by increasing the contact area in the heel region and incorporating the palmar part of frog and sole into weight bearing, thus decreasing the stress on the lamellae. Hoof cast with heel elevation could be a beneficial orthopaedic supportive therapy for horses suffering from acute laminitis.
Identifiants
pubmed: 33004040
doi: 10.1186/s12917-020-02571-5
pii: 10.1186/s12917-020-02571-5
pmc: PMC7528610
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
370Références
Vet Clin North Am Equine Pract. 2010 Apr;26(1):125-33
pubmed: 20381741
Vet Clin North Am Equine Pract. 2010 Aug;26(2):407-23
pubmed: 20699184
Equine Vet J. 2004 Jul;36(5):431-5
pubmed: 15253085
Vet Clin North Am Equine Pract. 1999 Aug;15(2):363-74
pubmed: 10472117
Vet Surg. 2005 Nov-Dec;34(6):630-6
pubmed: 16343152
Equine Vet J. 2020 Jun 15;:
pubmed: 32542795
Vet Clin North Am Equine Pract. 2010 Aug;26(2):451-8
pubmed: 20699187
Vet Clin North Am Equine Pract. 2010 Apr;26(1):103-14
pubmed: 20381739
Am J Vet Res. 2011 May;72(5):628-33
pubmed: 21529214
Equine Vet J. 2004 Apr;36(3):255-60
pubmed: 15147134
Vet Clin North Am Equine Pract. 2012 Aug;28(2):441-55
pubmed: 22981200
Equine Vet J. 2016 Jan;48(1):120-4
pubmed: 25385194