摘要
为了研究肢体较大幅度延长对软组织的影响,应用自制 Ilizarov 外固定架对35只山羊施行左胫骨骨干延长术。取术后6～7周,延长幅度达30%的延长区软组织作 HE 染色和戊二醛固定后电镜观察。受张力-应力影响,皮肤毛囊数目增多,皮脂腺肥大;血管壁中层平滑肌增生显著;周围神经雪旺氏细胞增生活跃,髓鞘完整;骨骼肌可见新生的肌母细胞。结果表明,慢速高频率进行肢体延长,有利于组织的修复。
Objective:To study the response of soft tissue in lengthened leg.left tibiasin 35 goats.Diaphyseal corticotomy was performed on the left tibia of 35 goats and distraction was car- ried out by llizarov's method.Soft tissue specimens from distractive region were fixed with 2.5% glutaradehyde and stained by HE.The legs were lengthened by 30% in 6～7 weeks after corticoto- my.Results:Smooth muscle in tunica media of the blood vessel and Schwann's cell of peripheral nerve showed obvious proliferation,and the myelin sheath remained intact.The appendages of skin,such as hair follicles,increased considerably in number,but the sebaceous glands hypertro- phied.New myoblasts were found.Conclusion:A slow and gradual distraction is beneficial to re- store the tissues.
出处
《中华小儿外科杂志》
CSCD
1996年第6期355-356,F004,共3页
Chinese Journal of Pediatric Surgery
