摘要
取新鲜尸体标本４具制作脊柱功能单位（ＦＳＵ）试件８个，仿颈前路减压植骨融合术制作三种实验模型，并对其施加２．３４牛顿·米（Ｎ·ｍ）的最大力矩，测出前屈、后伸、侧弯及旋转的运动范围（ＲＯＭ）。结果显示：①在屈曲运动时，稳定性骨折组（Ｂ组）植骨后刚度平均增加２９．８％，不稳定性骨折组（Ｃ组）植骨后，较之正常组（Ａ组）刚度下降８．６％，但上钢板后刚度增加１８．９％；②在过伸运动时，Ｂ和Ｃ组植骨后均未能增加刚度，上钢板后则刚度增加明显；③在侧弯时，不稳定性骨折上钢板后（Ｄ组）刚度增加１０％～１５％；④旋转时，Ｃ组植骨和上钢板后刚度与Ａ组比仍有差异。在临床８７例应用中，对稳定性骨折患者，仅作减压植骨术；对不稳定骨折患者，则采取植骨加前路钢板内固定。不论哪种类型，均辅以可靠的外固定。经追踪，均取得了优良的治疗效果。
Eight Functional Spine Units(FSU) got from four adult cadavers were studied after the operation of anterior decompression interbody fusion.The range of move (ROM) in flexion,extension,bending and rotation was measured for each FSU specimen by applying a load of 2.34Nm.The results showed:①In flexion,compared with the intact FSU group(Group A),the stiffness increased an average of 29.8% for steady fracture group(Group B),decreased 8.6% for unsteady fracture group(Group C),and increased 18.9% after the internal fixation was used.②In extension,the stiffness didn′t increase for both Group B and Group C,but increased greatly after the internal fixation was used.③In bending,the stiffness for unsteady fracture with internal fixation group (Group D) increased 10%～15% after the internal fixation were used.④In rotation,the stiffness for Group C and Group D lowered,compared with Group A.This study indicates that the graft provides better effect for anti-flexion and anti-bending but less effect for anti-extension and anti-rotation.In clinical application,the internal fixation was used for Group B,while normally it is important for Group C to use internal fixation.And the excellent external fixation is necessary for every patient.Satisfactory results have been achieved in 87 cases.
出处
《湖南医学》
1998年第6期324-326,共3页
Hunan Medical Journal
关键词
脊柱骨折
脊柱融合术
生物力学
骨折固定术
spinal fractures cervical vertebrae spinal fusion fracture fixation,internal biomechanics clinical trials
