【摘要】 观察兔桡骨远端骨骺慢性撞击伤后和兔前肢动脉内侧枝深支结扎后骨骺的病理变化,发现有变性、萎缩和增生等改变。通过对比,作者认为撞击外力比单纯供血障碍对关节软骨损伤有更大的影响。更多还原

【Abstract】 A special collision unit was used in the experiment by which the distal ends of the fore legs of young rabbits were struck repeatedly on the right aspect. In another group of young rabbits, deep branches of the artery of the right fore legs were ligated and severed. X-Ray examination was made before the two groups of rabbits were killed.Roentgenogram demonstrated: Growth plate of the right fore leg showed wave-like growth, thickened or thinned in the collision group; no difference showed between 2 fore legs in vessel group.Histological demonstrations1. Collision group: 1) Chondrocytcs of articular surface decreased, degenerated and disappeared. 2) Trabecula of the cpiphysis and metaphysis atrophied; osteoblasts and ostcocytcs decreased and degenerated. 3) Growth plate thickened, some arranged wave-like; chondrocytes increased and degenerated. 4) Fibrous tissues and cartilage increased in the mctaphysis. 5) Perichondral ring thickened.2. Vessel group: Similar to the collision group except fibrous and cartilage proliferation in the epiphysis and no arrangement disorder in the growth plate.更多还原