椎

At the caudal end of the sacrum the roof of the vertebral canal is commonly deficient.

在骶管末端，椎管往往缺损。

Objective : To improve CT diagnostic value of extrusion disc in intervertebral foramen.

目的： 提高对椎间孔内腰椎间盘突出的CT诊断及临床意义的认识。

However, only little information exists regarding the acting on a VBR.

然而， 关于椎体置换物承受载荷的资料却很少。

Conclusion: Total laminectomy destroyed the stability of lumbar spine.

结论： 全椎板切除术极大破坏腰椎稳定性。

Most of this cases have backleg pain more or less.

结果6例为腰椎骶化，10例为骶椎腰化，多有不同程度的腰腿痛。