Desai Mihir J, Reisman William M, Hutton William C
Vanderbilt University, Nashville, TN.
Am J Orthop (Belle Mead NJ). 2016 Feb;45(2):E42-5.
The purpose of this study was to test and compare external fixator construct stiffness using pin-to-bar clamps or multipin clamps across 2 external fixation systems. Constructs were tested with 8-mm and 11-mm-diameter bar systems and pin-to-bar or multipin clamps. Three construct designs were tested: construct 1 with a single crossbar and pin-to-bar clamps, construct 2 with 2 crossbars and pin-to-bar clamps, and construct 3 with 2 crossbars and multipin clamps. The stiffness of each construct (N = 24) was tested using anterior-posterior bending. Two crossbars and pin-to-bar clamps resulted in the highest mean stiffness. Constructs with a single crossbar and pin-to-bar clamps had a similar average stiffness compared with constructs with 2 crossbars and multipin clamps. Pin-to-bar clamps with 2 crossbars result in stronger spanning-knee external fixators than constructs using multipin clamps.
本研究的目的是使用针杆夹或多针夹，对两种外固定系统的外固定器结构刚度进行测试和比较。使用直径为8毫米和11毫米的杆系统以及针杆夹或多针夹对结构进行测试。测试了三种结构设计：结构1为带有单个横杆和针杆夹，结构2为带有两个横杆和针杆夹，结构3为带有两个横杆和多针夹。使用前后弯曲测试每种结构（N = 24）的刚度。两个横杆和针杆夹产生的平均刚度最高。与带有两个横杆和多针夹的结构相比，带有单个横杆和针杆夹的结构具有相似的平均刚度。与使用多针夹的结构相比，带有两个横杆的针杆夹可产生更强的跨膝外固定器。
