Article Text


Familial opposable triphalangeal thumbs associated with duplication of the big toes.
  1. P Merlob,
  2. M Grunebaum,
  3. S H Reisner


    A rare association of triphalangeal thumbs and duplication of the big toes is described. The family pedigree confirms autosomal dominant inheritance with marked penetrance. A systematic approach to the diagnosis of this anomaly is presented. The distinction between the two types of triphalangeal thumb, true (opposable) and finger-like (non-opposable), is emphasised.

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