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Publication type: Journal Article
Document type: Full Paper

Year: 2006

Author(s): Hinterhofer, C; WeiƟbacher, N; Buchner, HHF; Peham, C; Stanek, C

Title: Motion analysis of hoof wall, sole and frog under cyclic load in vitro: deformation of the equine hoof shod with regular horse shoe, straight bar shoe and bare hoof.

Source: Pferdeheilkunde (22), 3 314-319.

Authors Vetmeduni Vienna:

Buchner Heinz
Hinterhofer Christine
Peham Christian
Stanek Christian

Vetmed Research Units
University Equine Clinic, Clinical Unit of Equine Surgery


Abstract:
In a cadaver limb study 8 right and 8 left equine forelimbs of orthopaedically sound, adult warmblood horses were analysed with a kinematic system. A total of 10 reflective markers were fixed to the dorsal wall, the lateral or medial wall and heel, to the sole and to the frog; limbs were vertically loaded up to 3000 N with a cycling load imitating the regular walk. Hooves were shod with a straight bar horse shoe, the bar then cut out after the first 10 load cycles, leaving a regular horse shoe, which was finally removed to create the bare hoof situation. 10 kinematic markers were used to register motion via 3 digital cameras in 60 Hz sample frequency, data then being transformed to a three dimensional motion model. Deformation of the dorsal wall was a dorsopalmar depression. Amount of displacement in the direction of the horn tubules was measured close to 0.5 mm for all hooves near to the coronary band, displacement in the direction 90 to the run of the horn tubules at the same location was found 0.8 mm for bare hooves and 0.5 mm for shod specimen. Vertical displacements of sole and frog markers reached 1.6 mm in the bare hooves. The lateral walls displaced mainly inwards and, as the dorsal wall markers, with a higher amount of displacement proximal (0.5 mm) than distal. Medial markers showed inward or outward displacements with no correlation to shoeing or position. The difference in motion of the hoof capsules comparing the use of the regular horse shoe and the straight bar shoe was found mainly in the sole and frog displacement, namely allowing more depression without the bar. The fixation of horse shoes to the hooves in general resulted in an obvious restriction of the hoof capsules' deformation.


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