Hawkins sign:
In Talar fractures
Thin subchondral lucent line along all or part of the talar dome, Area of disuse osteopenia due to resorption of subchondral bone
Evident in 6–8 weeks after injury
Best seen on AP film, can be missed on lateral view
Indicates adequate blood supply, No AVN
Partial Hawkins sign:
May indicate partial AVN
References:
Pearce DH et al.Avascular Necrosis of the Talus: A Pictorial Essay. Radiographics 2005;25:399-410
Tehranzadeh et al. Partial Hawkins Sign in Fractures of the Talus: A Report of Three Cases. AJR 2003; 181:1559-1563
