Abstract：
A total of 32 cadaveric fingers with bony mallet injuries were fixed using either the hook plate or the pull-out suture technique. The purpose of this study was to assess the immediate postoperative biomechanical responses of the fixation techniques under different load conditions. The fingers were cyclically loaded with a force of 7 N for 3500 cycles and until construct failure. The maximum displacements of the hook plate and pull-out sutures were 0.7 mm and 0.6 mm, respectively (p = 0.556). The stiffnesses of the hook plate and pull-out suture were 1.3 N/mm and 1.1 N/mm, respectively (p = 0.515). The ultimate loads-to-failure for the hook plate and pull-out suture were 64.4 N (interquartile range [IQR] 37.7-77.7) and 44.5 N (IQR 29.7-63.5), respectively (p = 0.094). Both fixation techniques were able to withstand immediate postoperative mobilization without any difference in fracture displacement, construct stiffness or maximum load to failure.
摘要：
使用钩板或拉出式缝合技术固定了总共32个带有骨槌伤的尸体手指。这项研究的目的是评估在不同负荷条件下固定技术的术后即刻生物力学反应。用7N的力循环加载手指3500个循环,直到构造失效。钩板和拉出式缝线的最大位移分别为0.7mm和0.6mm,分别(p=0.556)。钩板和拉出式缝合线的刚度分别为1.3N/mm和1.1N/mm，分别(p=0.515)。钩板和拉出式缝合线的最终失效载荷为64.4N（四分位距[IQR]37.7-77.7）和44.5N（IQR29.7-63.5），分别（p=0.094）。两种固定技术都能够承受术后立即动员，而骨折位移没有任何差异，构造刚度或最大破坏载荷。
