下肢骨折(股骨干、胫骨骨折),是较为常见的损伤。下肢骨折发生后,多因致伤的暴力,肌群的牵拉力,肢体自身的重力以及搬运中的外力等因素造成明显的移位和畸形,往往形成肢体的重迭短缩。目前治疗此类骨折,都采用传统的方法进行重力牵引。少则3～4周,多则十几周,而且还要求有一套较为复杂的设备(牵引床、托马 Lower extremity fractures (femoral shaft, tibial fractures) are more common injuries. After the occurrence of lower extremity fractures, mostly due to the violence caused by injury, pulling force of muscle groups, limbs own gravity and external forces in handling and other factors caused significant displacement and deformity, often forming overlapping limb shortening. The current treatment of such fractures, using the traditional method of gravity traction. As little as 3 to 4 weeks, as many as ten weeks, but also requires a more complex set of equipment (traction bed, Thomas