1.Smple fenestration was adopted to resect the ligamenta flava to treat retro-Lumbar spinal stenosis for36 cases.

1.采用单纯开窗,切除手术,治疗退形性腰椎管狭窄症36例。

2.Methods 34 cases of normal human ligamenta flava were determined by salt precipitation , the collagen samples were analyzed by SDS - PAGE.

2.法用盐析法对34个正常标本中的ⅠⅡ胶原含量进行测定,并用SDS-PAGE法进行胶原的分确定。