单开门椎管扩大术对颈椎运动影响的生物力学研究  

BIOMECHANICAL EVALUATION OF CERVICAL SPINAL MOTIONS FOLLOWING EXPANSIVE OPEN-DOOR LAMINOPLASTY

作　　者：朱青安 卢万发 钟世镇 

机构地区：[1]第一军医大学临床解剖生物力学实验室

出　　处：《医用生物力学》1994年第3期134-141,共8页Journal of Medical Biomechanics

摘　　要：本文定量地研究了正常颈椎和单开门椎管扩大术（Ｅ０ＤＬ）后的颈椎（Ｃ２～６）各节段的运动。采用７例新鲜的青年颈椎标本（枕骨至Ｃ７），施加力偶最大为１．５Ｎｍ，使之产生前屈、后伸和左、右侧弯运动。从正、侧位的照片上分别测量颈椎的前屈、后伸和左、右侧弯运动。每种力偶都加载、卸载三次。计算中性区、弹性区和运动范围．在Ｃ２～５或Ｃ３～５行单开门椎管扩大术后，与正常颈椎运动相比较，Ｃ２～各节段的前屈、后伸和左、右侧弯均无显著性差别。可见单开门椎管扩大术不会造成颈椎的不稳。The in vitro study was to quantitively determine the movements of each of the cervical intervertebral joints(C2-C6) of normal structure and those following expansive open-door laminoplasty(EODL).Seven fresh young cadaveric specimens of whole cervical spine(Occipital bone to C7) were used in the determination of the movements in flexion,extension,left and right lateral bending.Pure moments with a maximum of 1.5 N.m were incrementally applied and the movements of bones were recorded by photography.Each moment was applied individually in three load/unload cycles.Parameters of neutral zone.elastic zone and range of motion were computed The difference in segmental motions were of no significant(P>0.05) when the motions of each segment from C2 to C6 in the intact cervical spine were compared with those of the same segment following EODL at C3-5 or C2-5.Worsened instability was unlikely to be seen in the middle/lower cervical spine following EODL.

关 键 词：椎管 扩大术 颈椎运动 生物力学 

分 类 号：R318.01[医药卫生—生物医学工程]