Medial dislocation of the first ray at the naviculocuneiform joint is a relatively unusual injury. Early diagnosis and expeditious treatment, by closed or open reduction with transarticular stabilization, are necessary for recovery of normal function. Here, we report a case of medial ray dislocation at the naviculocuneiform joint with intra-articular navicular and secondary metatarsal head fractures in a 22-year-old man, caused by a stumble when running with the right foot in plantar flexion. The injury was treated by open reduction, internal fixation with Kirschner wires, and navicular bone grafting. Four years after injury, the patient showed no discomfort, functional limitation, or degenerative osteoarthritis of the midfoot.