青年猪骨软骨病病理组织学变化与分类

Histopathologic changes and classification of osteochondrosis in young swine

研究了265头青年猪1 060个关节(附关节和腕关节各530个)骨软骨病的病理组织学变化。肉眼观察主要表现为患部关节软骨变色、充血,关节面粗糙、裂开、糜烂或凹陷,并根据其损伤程度进行分类,即正常、轻度、中度和严重,分别占21.7%、33.3%、29.0%、16.0%。显微观察特征为关节软骨局部增厚,软骨细胞增生、肥大;在一些区域软骨细胞变性、坏死,坏死区易形成裂隙;骨质内形成软骨岛。结论:青年猪有很高的骨软骨病发病率,后肢比前肢严重,并表现典型的骨软骨病组织病理学特征。

The histopathological changes of osteochondrosis of articular cartilages were investigated in young 265 swines which contained 1 060 joints （530 each hock and wrist joints） in this paper. Allochroism, hyperaemia, roughness, cleave, erosion or excavation were demonstrated on articular surface macroscopically. According to their injury severity, normal, mild, moderate and severe grades were classed and presented 21.7% , 33.3%, 29. 0% and 16. 0%, respectively. Microscopic features of them were the thicken cartilage, chondrocyte hyperplasia, hypertrophy, denature and death, cartilage necroses, streak and cleft in some area, and cartilage islands formed frequently in subchondral bone. In conclusion, there was high incidence of osteochondrosls in young swine and the lesions of articular joints in hind legs were more serious than that in front legs which were characteristic by his- topathological changes of osteochondrosis in all affected joints.