Hands: progressive transverse band like acro-osteolysis of all fingers. Juxta-articular osteopenia.
Feet: destructive change and dislocation of MTP and IP joints. Bone erosion and osteolysis of MTP, intercarpal, and PIP joints. Severe juxta-articular osteopenia.
Skull: multiple intrasutural Wormian bones. Midfacial hypoplasia, macrocephaly, platybasia and delayed closure of sutures.