Talar head fractures most commonly result from a compressive force with a plantar flexed foot.
Talar head fractures almost always involve the talonavicular joint, and associated dislocation/subluxation is common.
Two types of talar fractures are described 3:
- compression fracture, often with significant comminution
- shear fracture
The fracture may sometimes be difficult to identify on radiographs and CT may be necessary to identify the fracture line.
The incidence of avascular necrosis is low due to good vascularity, unlike talar neck fractures.
Treatment and prognosis
- non-displaced fractures: short leg cast and partial weight-bearing
- displaced fractures: open reduction - internal fixation (ORIF)
- 1. Long NM, Zoga AC, Kier R et-al. Insufficiency and nondisplaced fractures of the talar head: MRI appearances. AJR Am J Roentgenol. 2012;199 (5): W613-7. doi:10.2214/AJR.11.7313 - Pubmed citation
- 2. Early JS. Talus fracture management. Foot Ankle Clin. 2008;13 (4): 635-57. doi:10.1016/j.fcl.2008.08.005 - Pubmed citation
- 3. Melenevsky Y, Mackey RA, Abrahams RB et-al. Talar Fractures and Dislocations: A Radiologist's Guide to Timely Diagnosis and Classification. Radiographics. 2015;35 (3): 765-79. doi:10.1148/rg.2015140156 - Pubmed citation