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Proximal Sesamoid bone fracture is one of the most frequent catastrophic injuries\nsuffered by racehorses commonly, these injuries, are located in the forelimbs, with an almost identical frequency between the left and right forelimbs. The severity of the injury\nranges from asymptomatic lesions to...
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| Formato: | Tesis de maestría acceptedVersion |
| Lenguaje: | Español |
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Universidad de Buenos Aires. Facultad de Ciencias Veterinarias
2019
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| Acceso en línea: | http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=avemaster&cl=CL1&d=HWA_5638 https://repositoriouba.sisbi.uba.ar/gsdl/collect/avemaster/index/assoc/HWA_5638.dir/5638.PDF |
| Aporte de: |
| Sumario: | Proximal Sesamoid bone fracture is one of the most frequent catastrophic injuries\nsuffered by racehorses commonly, these injuries, are located in the forelimbs, with an almost identical frequency between the left and right forelimbs. The severity of the injury\nranges from asymptomatic lesions to lesions that cause significant joint instability, the\nclinical evolution is variable, and it depends on the type of fracture and the instability that it produces at the joint level. Almost half of the horses fracture when they are 2 years old,\nbecause sesamoid bones adapt to training in a slower and less efficient way than the rest of the suspensory apparatus components.\n Repeated hyperextensions associated with a highly demanding training and repeated races usually create micro-injuries, which increases significantly the risk of fractures.\n Fractures can be classified as: apical, basal, axial, abaxial, mid-body and biaxial or comminuted.\n The objective of the work was to determine the proportions of occurrence of the different types of fractures of the proximal sesamoid bones, of the affected limbs (right or left\nanterior) and of age (range from 2 to 4 years), in Thoroughbreds stabled at the Hipodromo Argentino de Palermo, which is located in the city of Buenos Aires.\n To confirm the presence of these fractures, clinical and radiographic diagnoses were\nmade (with a digital equipment model MINXRAY HF8015, ultra-light)\n The study was conducted in 25 SPC fractured equines.\nThe obtained results where the following: there is a greater occurrence of basal fractures (64%), followed by apical fractures (24%), there is no significant difference between the occurrence of fractures in the left and right forelimb, being almost the same ( 52%, 48%\nrespectively), the greatest occurrence is at 2 years of age (60%), followed by 3 years (24%) and 4 years (16%), no relationship was found between age and fracture type The gallop is a march that consists in three phases, in one of which only one of the previous members is grounded, supporting the entire body weight. At that moment, the\ndescent of the knot is maximum, producing greater traction by the distal sesamoid ligament. If there were micro-injuries in the basal region, at the time of maximum knot\ndescent, the traction generated could produce a fracture in that area. This could justify the\ngreater occurrences of these fractures in this study |
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