Objective To evaluate the clinical efficacy and biomechanical characteristics of transpedicle instrumentation combined with interbody cages for the fracture and dislocation of lower lumbar spine. Methods Nineteen cases with fracture and dislocation of lower lumbar spine were treated with segmental pedicle based plate combined with BAK or TFC implant, the clinical information was summarized and the biomechanical characteristics were analyzed. Results Seventeen cases were followed up for 3 20 mont...