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目的:研究正常前交叉韧带的超微结构.方法:关节镜下取7例患者的正常前交叉韧带,经处理后分别进行扫描电镜和透射电镜观察、照相并测量.结果:正常前交叉韧带胶原原纤维成平行、波浪状紧密排列,之间有连接纤维.胶原原纤维直径大小不一,集中于30nm～60nm.韧带内沿纤维走行分布成纤维细胞,活跃期细胞周围可见胶原原纤维细丝.结论:前交叉韧带超微结构与其功能相关,韧带内具有成熟的成纤维细胞.“,”Objective To study the ultrastructure of the anterior cruciate ligament.Methods Specimens were procured from seven patients with arthroscopy and observed under scanning and transmission electron microscope. Results Fibrils of normal anterior cruciate ligament arrayed in compact parallel form with waviness.Connecting fibers existed between fibrils.Diameters of fibrils were different with range of 30nm to 60nm mostly.Fibroblasts were distributed along with the fibrils.Active cells excrete filamentous collagen fibrils.Conclusion The ultrastructure of the anterior cruciate ligament was correlated with its function status.Mature fibroblasts existed in the ligament.