Metaphyseal dysplasia

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Metaphyseal dysplasia
ICD-10 Q78.5
ICD-9 756.9
OMIM 265900
DiseasesDB 29227

Metaphyseal dysplasia is a rare disease in which the outer part of the shafts of long bones is thinner than normal and there is an increased chance of fractures.


It is also named "Pyle disease", after Edwin Pyle.[1][2]


  1. synd/1140 at Who Named It
  2. E. Pyle. A Case of unusual bone development. Journal of Bone and Joint Surgery, Boston, 1931, 13-A: 874-876.