摘要:We tested the hypothesis that frequency of intense exercise during training would affect the likelihood of bucked shins complex developing in young horses. The relative prevalence of bucked shins were examined in two groups of Anglo-Arabian horses that trainined by different training programs. One group (6 horses) exercised once per week at maximal speed, the other group (7 horses) exercised twice per week at maximal speed. They ran on similar track surface conditions on the same track. Although the group exercised twice per week at maximal speed had a prevalence, there was no significant difference in the incidence of bucked shins between the two groups. It suggest that the number of maximum gallop than the duration of intense exercise. Pathomorphogenetically, there was suggestion that focal radiolucent areas, indicating focal remodeling regions consisting of a focal conglomerate of irregular-sized osteons, at the site of the middle layer in the cortical bone beneath periosteal bony proliferation might play a role as a precursor lesion for the occurrence of otitis of the third metacarpal bone (Mclll).