【摘要】 本文用自行设计的自控撞击装置,对幼兔前肢远端进行慢性损伤实验,建立囊外压力骨骺软骨板慢性损伤的动物病理模型,并报导了桡骨远端骺板慢性损伤的病理变化为增生、变性、萎缩,病变部位为生发层、增殖层、骨化沟和软骨膜环,发生机制为外力的反复撞击引起局部缺血、缺氧等。更多还原

【Abstract】 Fifty-four young rabbits were divided into five groups and each group was tested for 2, 4, 6, 8 and 12 weeks respectively. The right front leg of each rabbit was struck repeatedly with an automatically controlled striking unit. The striking force was 3.5 kg and the intensity was 90 times/min, 60 mins/day with a 10-minute rest in between. Pathological changes as observed by a light microscope were mainly hyperplasia, degeneration atrophy, focal necrosis, clefts and microfracture. These changes were more often seen in the germinal zone, proliferation zone, groove of ossification and perichondral ring. The change in the middle portion was more serious than that in the peripheral portion. Pathomechanism was also discussed in the paper.更多还原