Journal
JOURNAL OF MEDICAL GENETICS
Volume 37, Issue 4, Pages 292-296Publisher
BRITISH MED JOURNAL PUBL GROUP
DOI: 10.1136/jmg.37.4.292
Keywords
brachydactyly A1; metacarpophalangeal profile
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The brachydactylies are a group of conditions in which various subtypes have been defined based upon the specific pattern of digital bones involved. Type Al brachydactyly is principally characterised by maximal involvement of the middle phalanges. We report an extended family with a mild brachydactyly Al which was, except for some short stature, not associated with any of the additional clinical findings reported in several published families. While all the hand bones tended to be small, the principal features of the affected members were shortened middle and distal phalanges, proximal Ist phalanges, and 5th metacarpals. The feet were similarly involved and tended to have a broad, slightly adducted forefoot. The two affected children showed multiple coned epiphyses. This paper provides a detailed description of the family including the radiographic signs and metacarpophalangeal profiles, which proved to be useful in distinguishing the mildly affected persons.
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