Cross-link is a risk factor for rod fracture at pedicle subtraction osteotomy site: A finite element study.

•We aim to investigate whether cross-link is a risk factor for rod fracture at the pedicle subtraction osteotomy (PSO) site by using finite element model (FEM).•The geometry and dimensions of FEM were obtained from a high-resolution computed tomography scan data of a 65 years old female patient with spinal sagittal imbalance.•After PSO surgery, PVMS of the rod was significantly increased during flexion and extension at PSO site.•With cross-link at PSO site, PVMS of rod was further significantly increased during flexion and extension.