The head is almost completely and symmetrically collapsed; the surface is concave and the
cartilage here patchily eroded. There is no significant lipping.
This woman presented at the age of 79 with a painful hip of 3 months duration; there
was no clear history of a fall but an X-ray showed that the head was collapsed and that there was a
fracture of the neck of the femur which was probably some 3 months old.