Dik K J, van den Belt A J, van den Broek J
Department of Radiology, Faculty of Veterinary Medicine, University of Utrecht, The Netherlands.
Equine Vet J. 2001 Mar;33(2):172-5. doi: 10.1111/j.2042-3306.2001.tb00596.x.
Estimating the shape of the proximal articular border of the navicular bone and grading the radiological navicular bone condition (grades 3 and 4 representing the most severe changes), the aim of this study was to assess potential age-related implications of the previously reported shape predisposition to navicular disease in 746 normal and 174 clinically affected Dutch Warmbloods age 3-19 years. A significant, age-independent, shape-grade association found in normal and affected horses emphasises the fundamental character of the shape predisposition to navicular disease. A significant age-related increase of the least susceptible shape prevalence was found in elderly normal horses. A shape-independent low grades 3 and 4 prevalence (mean 15%) was found in normal horses, vs. a high grades 3 and 4 prevalence (mean 85%) in the affected horses. Therefore, the clinical manifestation of the disease is grade-rather than shape-dependent. A significant age-related appearance of inverted flask-shaped channels and enthesophytes was found in the clinically affected horses. However, considering the significant shape-radiological features association previously reported in 3-year-old normal horses, this association may be shape- rather than age-dependent.
通过估计舟骨近端关节边缘的形状并对舟骨的放射学状况进行分级（3级和4级代表最严重的变化），本研究旨在评估先前报道的舟骨疾病形状易感性在746匹3至19岁正常荷兰温血马和174匹临床患病荷兰温血马中与年龄相关的潜在影响。在正常和患病马匹中发现的显著的、与年龄无关的形状分级关联强调了舟骨疾病形状易感性的基本特征。在老年正常马匹中发现最不易感形状的患病率有显著的与年龄相关的增加。在正常马匹中发现与形状无关的3级和4级低患病率（平均15%），而在患病马匹中3级和4级患病率较高（平均85%）。因此，该疾病的临床表现取决于分级而非形状。在临床患病马匹中发现与年龄相关的显著的倒烧瓶状通道和骨赘出现。然而，考虑到先前在3岁正常马匹中报道的显著的形状与放射学特征关联，这种关联可能取决于形状而非年龄。
