Rf can be instrumented easily to provide symmetric lordotic distraction to obtain the best possible reduction of intracanal fragments of burst fractures indirectly and to provide posterior lordotic pull to correct spondylolisthetic deformity effectively 此系统可很容易的操，以提供均匀的前曲撑张力而获得最好的因爆裂型脊椎骨折所造成的脊育腔内骨碎片之复位，也可有效的提供前曲拉力以矫正脊椎滑脱畸型。
