3ENGEL J M. Ultrasound of the spine in focal stenosis and disc disease[J]. Spine 1985,10(10) :926-927.
4吴阶平 黄家驷.外科学[M].北京:人民卫生出版社,1992.80.
5周永昌 郭万学.超声医学[M].北京:科学技术文献出版社,1998.1055-1059.
6Englel JM. Ulrasound of the spunal in foolal stenosis and disc disease spinal [J], 1985,10:926.
7Margaret A, Montana, MD, Michael L, et al. vip Editors. Ultrasonograplry of the musculoskeletal sgstem[C]. Volume26. The Radiologic Clinics of North America W B Saunoders company. 1998:8.