A case of traumatic dislocation of the lateral sesamoid of flexor hallucis brevis tendon associated with metatarsal neck fractures due to a crush injury is reported. This patient was treated nonoperatively by elevation, application of plaster, and then free mobilisation. The patient has now fully recovered and remains completely asymptomatic despite residual sesamoid dislocation 1 year after the injury. The nonoperative management of this injury has not, to our knowledge, been reported previously.