Diffuse superficial and deep soft tissue oedema.
Diffuse deformity and destructive changes of the tarsal bones (navicular bone, cuboid, and cuneiforms) with evidence of diffuse marrow oedema and subcortical cystic changes. Deformity of the metatarsal bases with subcortical cystic changes and marrow oedema. Subluxation of the tarso-metatarsal joints.