The results obtained should help with the development of bone implants and guards, supporting theoretical studies, and in the evaluation of bone injuries.
SummaryThe objective of this postmortem study was to determine the fracture configurations of the equine radius and tibia after a simulated kick. Fracture configurations of 35 radii and 36 tibiae from 19 adult horses were evaluated after a simulated kick in an experimental exvivo study. The bones were dissected, the proximal and distal ends were embedded in resin, fixed horizontally and preloaded in compression, and a steel impactor, designed to simulate a shod equine hoof, was dropped from a height of three to six metres onto the diaphysis. The experiments were filmed with a high-speed camera (30,000 pictures/second). The bones were then photographed and radiographed using a C-arm based 3D imaging device. A software programme (Osirix) was used to reconstruct the fissured and fractured bones three-dimensionally on a computer screen for assessment of the fracture configuration and fissure lines. Incomplete fractures occurred in 26 bones and complete fractures in 42. The complete fractures included 22 butterfly and 20 simple fractures; the latter included 17 oblique, two transverse and one longitudinal fracture. Additional longitudinal fissures occurred in 98% of the fractures. The butterfly fragment was always located on the side opposite the impact. There was a significant correlation between the type of bone and the fracture configuration: butterfly and oblique fractures occurred more frequently in the tibia, and incomplete fractures occurred more frequently in the radius. The data collected can be used to optimize evaluation of fractures and fissures caused by a kick and thereby improve surgical stabilization.
The risk of injury to veterinarians treating horses is high, particularly when performing painful procedures. The present retrospective study investigated this risk, including the frequency and severity of kick injuries, by submitting questionnaires to 700 veterinary practitioners in Switzerland. Evaluation of 216 completed questionnaires revealed that the frequency of kick injuries was affected by the professional experience of the veterinarian, veterinarians being an owner of a horse, the season, the type of procedure, the percentage of equine patients in the practice population, the treatment location (stall, pasture) and chemical restraint of the patient. Severe injuries incurred by veterinarians in recent years were few in number and the result of a number of unfortunate circumstances, which included hurried procedures due to time restraints and unforeseen events that frightened the patient. The risk factors derived from the full statistical model are the percentage of equine patients in the practice population, the treatment location, the type of procedure and chemical restraint of the patient. Using this information, it should be feasible to reduce the risk of injuries. Sedation of horses undergoing painful procedures, choosing a safe treatment location and caution on the part of the veterinarian are advised to reduce the number of injuries.
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