Gorczyca J T, Varga E, Woodside T, Hearn T, Powell J, Tile M
Sunnybrook Health Science Centre, Toronto, Ontario, Canada.
Injury. 1996 Oct;27(8):561-4. doi: 10.1016/s0020-1383(96)00078-2.
This study compares the relative strengths of iliosacral lag screws and transiliac bars in the fixation of vertically unstable pelvic injuries with sacral fractures. A vertical sacral fracture was artificially induced by vertical loading in eight pelvises from cadavers, which were then fixed with two 6.5 mm iliosacral lag screws or two 6.4 mm transiliac bars. The pelvises were then loaded again to failure. The mean strength of iliosacral lag screw fixation was 819 newtons and for transiliac bars it was 1066 newtons, but the study was too small for the difference to be judged as statistically significant. Various advantages and disadvantages of each method of fixation are discussed.
本研究比较了骶髂拉力螺钉和髂骨棒在固定伴有骶骨骨折的垂直不稳定骨盆损伤中的相对强度。通过对8具尸体骨盆进行垂直加载人工诱导出垂直骶骨骨折，然后分别用两枚6.5毫米骶髂拉力螺钉或两根6.4毫米髂骨棒进行固定。随后再次对骨盆加载直至失效。骶髂拉力螺钉固定的平均强度为819牛顿，髂骨棒固定的平均强度为1066牛顿，但该研究样本量过小，无法判断差异是否具有统计学意义。文中还讨论了每种固定方法的各种优缺点。
