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Effects of aluminum hinged shoes on the structure of contracted feet in Thoroughbred yearlings.

Tanaka K, Hiraga A, Takahashi T, Kuwano A, Morrison SE - J Equine Sci (2015)

Bottom Line: We applied aluminum hinged shoes (AHSs) to the club foot-associated contracted feet of 11 Thoroughbred yearlings to examine the effects of the shoes on the shape of the hoof and third phalanx (P III).After 3 months of AHS use, the size of the affected hooves increased significantly, reaching the approximate size of the healthy contralateral hooves with respect to the maximum lateral width of the foot, the mean ratio of the bearing border width to the coronary band width, and the mean ratio of the solar surface width to the articular surface width.These results suggest that the AHSs corrected the contracted feet in these yearling horses.

View Article: PubMed Central - PubMed

Affiliation: Center for Equine Breeding Technology, Japan Bloodhorse Breeder's Association, Shizunai Stallion Station, Hokkaido 056-0144, Japan.

ABSTRACT
We applied aluminum hinged shoes (AHSs) to the club foot-associated contracted feet of 11 Thoroughbred yearlings to examine the effects of the shoes on the shape of the hoof and third phalanx (P III). After 3 months of AHS use, the size of the affected hooves increased significantly, reaching the approximate size of the healthy contralateral hooves with respect to the maximum lateral width of the foot, the mean ratio of the bearing border width to the coronary band width, and the mean ratio of the solar surface width to the articular surface width. These results suggest that the AHSs corrected the contracted feet in these yearling horses.

No MeSH data available.


Related in: MedlinePlus

Measurements used to examine the effects of the AHS.C, coronary band width of the foot; AS, articular surface width of P III; SS, solar surface width of P III; BB, bearing border width of the foot.
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fig_003: Measurements used to examine the effects of the AHS.C, coronary band width of the foot; AS, articular surface width of P III; SS, solar surface width of P III; BB, bearing border width of the foot.

Mentions: Each club foot was evaluated before trimming of the foot. Disease progression was classified according to Redden’s grading system [10] (Grade 0 to 3, depending on severity) on the basis of conformational changes in the hoof and degree of flexural digital deformity. Morphological measurement of the foot was performed right after trimming but before shoeing at the first shoe application and again 3 months later. Changes in the conformation of the foot were calculated according to differences in the length of each measured section before and after the AHS trial. We first measured the maximum lateral width of the foot (corresponding to the width of the bearing border on the radiograph) using a caliper (Digimatic Caliper CD-20PSX, Mitutoyo Corporation, Kawasaki, Japan). At the first AHS application, radiographs of the dorsopalmar view of the foot were recorded using a portable X-ray device (Atomscope-20SH, Mikasa Vets Co., Ltd., Tokyo, Japan)and imaged using a computerized imager (Regius model 190, Konica Minolta Inc., Tokyo, Japan). The brightness and contrast were adjusted to sharply define the edges of the hoof in the frontal view. We did not use any contrast agents to sharpen the edges because it was impossible to precisely portray outlines of the randomly curved hoof wall in the dorsopalmar radiograph view. We then measured the breadth of the coronet, the bearing border of the hoof capsule and the width of the articular and solar surfaces of P III (Fig. 3Fig. 3.


Effects of aluminum hinged shoes on the structure of contracted feet in Thoroughbred yearlings.

Tanaka K, Hiraga A, Takahashi T, Kuwano A, Morrison SE - J Equine Sci (2015)

Measurements used to examine the effects of the AHS.C, coronary band width of the foot; AS, articular surface width of P III; SS, solar surface width of P III; BB, bearing border width of the foot.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4496424&req=5

fig_003: Measurements used to examine the effects of the AHS.C, coronary band width of the foot; AS, articular surface width of P III; SS, solar surface width of P III; BB, bearing border width of the foot.
Mentions: Each club foot was evaluated before trimming of the foot. Disease progression was classified according to Redden’s grading system [10] (Grade 0 to 3, depending on severity) on the basis of conformational changes in the hoof and degree of flexural digital deformity. Morphological measurement of the foot was performed right after trimming but before shoeing at the first shoe application and again 3 months later. Changes in the conformation of the foot were calculated according to differences in the length of each measured section before and after the AHS trial. We first measured the maximum lateral width of the foot (corresponding to the width of the bearing border on the radiograph) using a caliper (Digimatic Caliper CD-20PSX, Mitutoyo Corporation, Kawasaki, Japan). At the first AHS application, radiographs of the dorsopalmar view of the foot were recorded using a portable X-ray device (Atomscope-20SH, Mikasa Vets Co., Ltd., Tokyo, Japan)and imaged using a computerized imager (Regius model 190, Konica Minolta Inc., Tokyo, Japan). The brightness and contrast were adjusted to sharply define the edges of the hoof in the frontal view. We did not use any contrast agents to sharpen the edges because it was impossible to precisely portray outlines of the randomly curved hoof wall in the dorsopalmar radiograph view. We then measured the breadth of the coronet, the bearing border of the hoof capsule and the width of the articular and solar surfaces of P III (Fig. 3Fig. 3.

Bottom Line: We applied aluminum hinged shoes (AHSs) to the club foot-associated contracted feet of 11 Thoroughbred yearlings to examine the effects of the shoes on the shape of the hoof and third phalanx (P III).After 3 months of AHS use, the size of the affected hooves increased significantly, reaching the approximate size of the healthy contralateral hooves with respect to the maximum lateral width of the foot, the mean ratio of the bearing border width to the coronary band width, and the mean ratio of the solar surface width to the articular surface width.These results suggest that the AHSs corrected the contracted feet in these yearling horses.

View Article: PubMed Central - PubMed

Affiliation: Center for Equine Breeding Technology, Japan Bloodhorse Breeder's Association, Shizunai Stallion Station, Hokkaido 056-0144, Japan.

ABSTRACT
We applied aluminum hinged shoes (AHSs) to the club foot-associated contracted feet of 11 Thoroughbred yearlings to examine the effects of the shoes on the shape of the hoof and third phalanx (P III). After 3 months of AHS use, the size of the affected hooves increased significantly, reaching the approximate size of the healthy contralateral hooves with respect to the maximum lateral width of the foot, the mean ratio of the bearing border width to the coronary band width, and the mean ratio of the solar surface width to the articular surface width. These results suggest that the AHSs corrected the contracted feet in these yearling horses.

No MeSH data available.


Related in: MedlinePlus