中国组织工程研究与临床康复2011，Vol.15Issue(17)：3177-3182,6.DOI:10.3969/j.issn.1673-8225.2011.17.033
单节段腰椎活动度对邻近节段运动的影响
Influence of lumbar mono-segmental activity on motion of the adjacent segments
陈远明 1靳安民 2陈锋 1周先明 1黄民锋 1邹冬青1
作者信息
- 1. 广西中医学院附属瑞康医院骨脊柱科一区,广西壮族自治区南宁市,530011
- 2. 南方医科大学附属珠江医院骨科中心,广东省广州市,510282
- 折叠
摘要
Abstract
BACKGROUND: Studies have reported that range of motion (ROM) and pressure of adjacent segments increased after lumbar fusion; but some studies showed, compared with dynamic non-fusion systems or normal lumbar segment, the ROM and pressure of adjacent segment are decreased rather than increased. However, the precise affects of lumbar mono-segmental activity on adjacent segments are unclear.OBJECTIVE: To explore the influence of single-segmental lumbar ROM on the motion of adjacent segments.METHODS: Six fresh-frozen adult lumbar spines (L2-S2) were used. In a same specimen, these four kinds of operation by gradually at L4-L5 level represent different degrees of mobility. So five conditions were built as following: condition A: intact specimen; condition B: part of the instability; condition C: "elastic fixed" non-fusion (COFLEX); condition D: complete instability;and condition E: "rigid fixation" and fusion. Spinal three-dimensional motion testing machine were used. Each group specimen ROM in flexion-extension and bilateral lateral bending and bilateral axial rotation were determined. All values were normalized to the value of intact specimen group.RESULTS AND CONCLUSION: About range of motion, in the processing segments (L4-L5), there were the greatest range of motion in condition D and the least range of motion in condition E. The influence of monosegmental lumbar mobility on adjacent segment range of motion is no significance but axial rotation after "rigid fixation" and fusion that was reduced of cranial adjacent segment (L2-L3). Global specimen in each group ROM significantly different, their changing patterns was consistent with L4-L5level mobility. In the "load control", the influence of single-segmental lumbar stability on adjacent segment range of motion was not obvious. Patient with lumbar fusion using the normal force may be beneficial to prevent spine from adjacent segment disease.关键词
邻近节段/腰椎/融合/生物力学/活动度分类
医药卫生引用本文复制引用
陈远明,靳安民,陈锋,周先明,黄民锋,邹冬青..单节段腰椎活动度对邻近节段运动的影响[J].中国组织工程研究与临床康复,2011,15(17):3177-3182,6.
