Most frequent fractures of the carpus and tarsus in racing greyhounds Part II
نویسندگان
چکیده
Central Tarsal Bone (CTB) Fractures The highest incidence of CTB fractures (96%) occurs in the right leg and some of these can be so devastating that they terminate the patient’s racing career. There are several factors to consider for a thorough understanding of how these fractures occur. During the anti-clockwise racing in the bends, the right hind leg is procuring propulsion but is also counteracting the centrifugal forces (Fig 1). In this situation the central tarsal bone is acting as the buttress for the medial aspect of the tarsus where all the greatest compressive forces are applied as the dog is negotiating the curves. It has also been theorized by Kenneth Johnson et al that adaptative remodeling due to cycling loading can produce changes of the bone mineral density with microcracks, predisposing to catastrophic fracture [2-3]. According to the shape and severity, fractures of the CTB have been classified into five types [4]:
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