A review of tibial spine fractures in bicycle injury.

Nine tibial spine fractures were studied. Three of these nine cases included younger patients who fell from a bicycle and sustained an isolated avulsion fracture of the tibial spine. In all three cases, the medial tibial spines of the right knees were fractured. The other remaining five medial tibial fractures included two motorcycle and two automobile accidents, together with one basketball injury. One of the nine tibial spine fractures involved the lateral tibial spine.