Department of Large Animal Clinical Sciences, Rakuno Gakuen University, 582 Midorimachi, Bunkyodai, Ebetsu, Hokkaido, 069-8501, Japan.
Vet Rec. 2010 Dec 4;167(23):904-6. doi: 10.1136/vr.c4006.
Two cases of extensor process fracture of the distal phalanx in the forelimb in a Holstein bull and a lactating Holstein cow are described. Each animal showed acute onset of severe lameness with a gait characterised by lengthening of the cranial phase of the step in order to place more weight on the heel. Mild swelling and a localised pain response upon application of deep pressure above the coronet were also observed. A definitive diagnosis was made by radiography with complementary ultrasonography, which provided the best definition of the fracture fragment over the dorsal aspect of the distal interphalangeal joint. Applying a wooden block to a sound claw for three weeks was curative and provided a good prognosis in both cases.
描述了一例荷斯坦公牛和一例泌乳荷斯坦奶牛前肢趾伸肌腱突骨折。每只动物都表现出急性严重跛行，其步态特征为步幅的颅侧阶段延长，以便将更多的重量放在蹄踵上。在冠状部上方施加深部压力时，也观察到轻度肿胀和局部疼痛反应。通过放射照相术和补充超声检查进行了明确诊断，超声检查可在跗关节远端背侧提供骨折碎片的最佳定义。在这两种情况下，将木块应用于健康的蹄甲上 3 周都是有效的治疗方法，预后良好。
