英语语法分析

In some cases, a spinal fusion may be performed after the laminectomy.

有些病例，在椎板切除术后需要进行脊柱融合术。

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。

All cases were treated with en bloc hemi-articular process laminectomy.

所有病例均行整块半关节突全椎板切除术。