Wormian Bones

Definition

 

Intra-sutural ossicles in lambdoidal, posterior sagittal and tempero-squamous sutures

- normal up to 6 months of age

- multiple areas of ossification skull cranial sutures

- early fusion can give papilloedema

 

Cremmin et al Skeletal Radiology 1982 8: 35-38

- size of greater than 6mm by 4mm

- mosaic rather than linear pattern

- more than 10 in number

 

DDx / Cretin PORK CHOPS

 

Cretanism

 

Pyknodysostosis

Osteogenesis Imperfecta

Rickets in healing phase

Kinky hair syndrome of Menke

 

Cliedocranial Dysplasia

Hypophosphatasia (also hypothyroidism)

Otopalatodigital syndrome

Primary Acroosteolysis, Pachydermoperiostosis

Syndromes and Chromosome disorder; esp 21