Craniocaudal cyclic load improves risk assessment of lumbar pedicle screw loosening: finite element analysis based on computer tomography - Jiang, Chenyu; Ouyang, Hanqiang; Li, Yali; Lang, Ning; Zhang, Yan; Jiang, Liang; Yuan, Huishu (Frontiers in Bioengineering and Biotechnology, 2025)