Pelker R R, Duranceau J S, Panjabi M M
Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, New Haven, Connecticut.
Spine (Phila Pa 1976). 1991 Feb;16(2):117-22.
The three-dimensional rotational biomechanical properties of several different types of posterior stabilizing procedures are reported. A severe ligamentous and bony injury was simulated with three vertebral body human cervical spine segments. Good stabilization was noted for all of the repairs in flexion loading. Without polymethylmethacrylate supplementation, none of the repairs was stable in extension. All of the repairs provided reasonable stabilization for lateral bending except for the posterior wiring without methacrylate, and all but the posterior wiring and facet fusion provided reasonable stabilization against axial rotation loading. The supplementation of all of these repairs with polymethylmethacrylate added considerably to the stability of all the constraints. These findings may be useful in clinical decision-making for determining the kind of repairs and postoperative brace protection to use.
报告了几种不同类型后路稳定手术的三维旋转生物力学特性。使用三个椎体的人体颈椎节段模拟严重的韧带和骨损伤。在屈曲加载时，所有修复均显示出良好的稳定性。在没有聚甲基丙烯酸甲酯补充的情况下，所有修复在伸展时均不稳定。除了没有甲基丙烯酸酯的后路钢丝固定外，所有修复在侧弯时都提供了合理的稳定性，并且除了后路钢丝固定和小关节融合外，所有修复在轴向旋转加载时都提供了合理的稳定性。用聚甲基丙烯酸甲酯对所有这些修复进行补充，显著增加了所有约束的稳定性。这些发现可能有助于临床决策，以确定使用何种修复方法和术后支具保护。
