Brachydactyly type D
Abnormal shortening of the distal part of the thumb
Brachydactyly type D
Brachydactyly type D, also known as murderer's thumb, stubbed thumb, spoon thumb, power thumb, short thumb, or toe thumb, is a genetic trait recognised by a thumb being relatively short and round with an accompanying wider nail bed. The distal phalanx of such thumbs is approximately two-thirds the length of full-length thumbs. It is the most common type of shortness of digits (brachydactyly), affecting approximately 2% of the population. It is associated with the HOXD13 gene, located on chromosome 2q31.1.
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