An isolated fracture dislocation of the body of the tarsal navicular is an unusual injury; a displaced one is difficult to treat, and a comminuted one poses a further therapeutic problem. Previously, several authors have described various options with additional fixation across the cuneonavicular joint through a tarsal navicular. However, in the comminuted tarsal navicular fracture, the question arises regarding the efficacy of the wires through the comminuted fracture fragments to maintain satisfactory reduction. The technique that several authors have described is impractical for the treatment of a severe comminuted tarsal navicular fracture. We present two cases of a comminuted fracture treated with open reduction and internal fixation with supplementary wire fixation through cuneiforms and cuboid as an ancillary method. This method proved to be satisfactory for the treatment of a comminuted fracture of the body of the navicular.