Tibiofibular dislocation is a condition that is a recognized cause of lateral knee pain in trauma patients and can occur in isolation or as a part of multiple injuries. There is usually prominence of the fibular head on clinical examination, with tenderness to palpation. Radiological investigation can confirm the diagnosis, and in the case or our patient, both plain radiographs and MRI were performed. MRI permitted pre-reduction assessment of the intrinsic knee ligaments, as well as the common peroneal nerve. The dislocated fibular head was successfully relocated under general anaesthesia as a closed reduction.