Dai L Y, Tu K Y, Xu Y K, Zhang W M, Cheng P L
Department of Orthopaedics, Changzheng Hospital, Shanghai.
Chin Med J (Engl). 1992 Nov;105(11):944-8.
The change of the stress distribution of the lumbar spine after discectomy was analysed by the three-dimensional finite element method. It was shown that the stress level in the posterior element was higher, but that in the anterior element was lower than before disc excision. The most significant change of the stress distribution was found in the trabecular bone of the vertebral body. It is considered that in discectomy the normal disc tissue should be preserved as much as possible to maintain good function of the spine.
采用三维有限元方法分析了椎间盘切除术后腰椎应力分布的变化。结果表明，后部结构的应力水平较高，而前部结构的应力水平低于椎间盘切除术前。椎体松质骨的应力分布变化最为显著。认为在椎间盘切除术中应尽可能保留正常的椎间盘组织，以维持脊柱的良好功能。
