2. 【文章标题】:The influence of the insertion technique on the pullout force of pedicle screws: an experimental study. 【链接】:http://www.ncbi.nlm.nih.gov/pubmed/20150834 【作者】:Chatzistergos PE1, Sapkas G, Kourkoulis SK. 【期刊】:Spine (Phila Pa 1976). 2010 Apr 20;35(9):E332-7. doi: 10.1097/BRS.0b013e3181ba0b0c. 3. 【文章标题】:A comparison of screw insertion torque and pullout strength.