Torg's classification for proximal 5th metatarsal fractures
Torg's classification of proximal fifth metatarsal fractures is based on the degree of sclerosis adjacent to the fracture on imaging at the time of presentation to determine the fracture age.
- narrow fracture line with sharp margins and no widening
- minimal cortical hypertrophy
- no intramedullary sclerosis
- wide fracture line with adjacent lucency
- fracture line involving both cortices
- partial obliteration of medullary canal by sclerosis at the site of fracture
- wide fracture line
- periosteal new bone formation
- complete obliteration of medullary canal by sclerosis at the site of fracture
Other classification systems
- 1. Ding BC, Weatherall JM, Mroczek KJ, Sheskier SC. Fractures of the proximal fifth metatarsal: keeping up with the Joneses. Bull NYU Hosp Jt Dis.2012;70(1):49-55.