TableĀ 3

Fracture classifications

ClassificationNavicular (Saxena et al19)Fifth metatarsal (Torg)
T1Dorsal cortical fractureNo intramedullary sclerosis, a fracture line with sharp margins, no widening or radiolucency, minimum cortical hypertrophy or evidence of periosteal reaction
T2Dorsal fracture into navicular bodyFracture line involving both cortices, associated periosteal new bone; a widened fracture line with adjacent radiolucency and evidence of intramedullary sclerosis
T3Fracture extends to second cortexWide fracture line with periosteal new bone and radiolucency, complete obliteration of the medullary canal at the fracture site by sclerotic bone