Systematic review of dynamization exchange nailing for delayed/non-union femoral fractures.

Aim: To analyze the literature on efficacy of dynamamization exchange nailing in treatment of delayed and non-union femur fractures.

Methods: Ultimately, 31 peer-reviewed articles with 644 exchanged nailing patients and 131 dynamization patients were identified and analyzed. The following key words were inputted in different combinations in order to search the field of publications in its entirety: "non-union", "delayed union", "ununited", "femur fracture", "femoral fracture", "exchange nailing", "dynaiz(s)ation", "secondary nailing", "dynamic", "static", and "nail revision".