Doige C E, Hoffer M A
Can J Comp Med. 1983 Oct;47(4):387-95.
Navicular bones from 74 horses were examined at necropsy. Animals ranged in age from eight months to 30 years. Eight horses had a clinical history of navicular disease. Degenerative lesions in the fibrocartilaginous surface of the navicular bone and of the surface of the deep flexor tendons were age related changes not necessarily related to lameness. These lesions were more extensive in horses with a history of navicular disease, and were often accompanied by adhesions and subchondral cavitation of the fibrocartilaginous surface of the navicular bone. Osteophytes, present in 12 of the 74 horses, appeared to be age-related and were uncommon in horses with a history of navicular disease. Nutrient foramina on the distal border of the navicular bone were highly variable in size and shape; in horses with a history of navicular disease they often had a small external opening that became larger as it penetrated the bone. Occlusive vascular disease (arteriosclerosis) was found in sound horses and in horses with a history of navicular disease. Thrombosis of arteries or ischemic necrosis of bone was not identified in any case.
对74匹马的舟骨在尸检时进行了检查。动物年龄从8个月到30岁不等。8匹马有舟骨病的临床病史。舟骨纤维软骨表面和深层屈肌腱表面的退行性病变是与年龄相关的变化，不一定与跛行有关。这些病变在有舟骨病病史的马中更为广泛，并且常常伴有舟骨纤维软骨表面的粘连和软骨下空泡形成。74匹马中有12匹出现骨赘，似乎与年龄有关，在有舟骨病病史的马中不常见。舟骨远端边缘的营养孔大小和形状差异很大；在有舟骨病病史的马中，它们通常有一个小的外部开口，随着其穿透骨头而变大。在健康马和有舟骨病病史的马中均发现闭塞性血管疾病（动脉硬化）。在任何病例中均未发现动脉血栓形成或骨缺血性坏死。
