Grøndahl A M, Engeland A
Norwegian College of Veterinary Medicine, Department of Large Animal Clinical Sciences, Oslo.
J Am Vet Med Assoc. 1995 Apr 1;206(7):1013-7.
The tarsocrural, metacarpophalangeal, and metatarsophalangeal joints of 753 Standardbred yearlings were radiographed. On the basis of radiographic findings, the horses were allotted into 4 groups. Group-1 horses had osteochondrosis in the tarsocrural joints. Group-2 horses had palmar/plantar bony fragments in the metacarpo- and metatarsophalangeal joints. Group-3 horses had radiographic changes in the metacarpo- and metatarsophalangeal joint region, such as bony fragments located at the dorsoproximal end of the proximal phalanx, osteochondrosis of the sagittal ridge of the third metacarpus/metatarsus, ununited proximoplantar tuberosity of the proximal phalanx, or nonarticular, osteolytic and productive changes in the proximal sesamoid bones. Group-4 horses did not have radiographic changes. The number of race starts and race earnings (categorized) of the horses in groups 1, 2, and 3 were compared with those of the horses in group 4, using a multivariate regression analysis. Horses in groups 1, 2, and 3 had significantly fewer starts and somewhat lower earnings compared with the horses in group 4.
对753匹标准赛马一岁驹的跗关节、掌指关节和跖趾关节进行了X光检查。根据X光检查结果，将这些马匹分为4组。第1组马匹的跗关节患有骨软骨病。第2组马匹的掌/跖骨和跖趾关节有掌侧/跖侧骨碎片。第3组马匹的掌骨和跖趾关节区域有X光变化，如位于近节指骨背近端的骨碎片、第三掌骨/跖骨矢状嵴的骨软骨病、近节指骨近端跖侧结节未愈合、或近籽骨的非关节性、溶骨性和增生性变化。第4组马匹没有X光变化。使用多变量回归分析，将第1、2和3组马匹的比赛起跑次数和比赛收入（分类）与第4组马匹进行比较。与第4组马匹相比，第1、2和3组马匹的起跑次数明显较少，收入也略低。
