- Discussion:
- sign provides evidence of revascularization of talar body;
- indicated by patchy subchondral osteoporosis at approx 6-8 weeks;
- appearance of decreased subchondral bone density (subchondral resporption) in the dome of talus 6 to 8 wks following injury indicates
that there is sufficient vascular supply to bone to allow normal disuse osteopenia to occur;
- suggests that the bone segment has adequate circulation, and that normal healing is occuring;
- it is important to look at
Mortise x-ray & not lateral because fibula can sometimes cause increasead density of body of talus, which can
sometimes be mistaken for vascular changes;
Prognostic reliability of the hawkins sign in fractures of the talus.
