![]() 9 – BDD is not associated with other abnormal physical characteristics however, distal phalanges of other digits may also be broad and short.8 – BDD was also coined (misleadingly) by fortune-tellers as a murderer’s thumb. ![]() 7 – BDD is often refered to with various synonyms such as: clubbed thumbs, stub thumbs, stubby thumbs, toe thumbs, hammer thumbs, Dutch thumbs, or a potter’s thumb.6 – BDD is sometimes a familial trait, but it appears slightly less common among males due to a reduced penetration (about 62%).5 – BDD varies among populations around the world according ‘The World of Clubbed Thumbs’ the statistics are: 0.1% of blacks, 0.4% of whites, 1.6% of Jews, 3% of Arabs, and in Japanese possibly up to 4.0%.4 – BDD is a minor but common affliction (just a cosmetic defect) that can be found in 1 up to 40 out of every 1,000 people (= prevalence ranging from 0.1% up to 4.0%).3 – BDD is a genetic trait associated with gene HOXD13, genomic locus 2q31-q32 HOXD13, the most 5′ gene of the HOXD cluster, encodes a homeodomain transcription factor with important functions in limb patterning and growth.Thomsen: Hereditary growth anomaly of the thumb. 2 – BDD was first described as an anomaly in 1928 by O.Other investigations confirmed that the short distal phalanx of the thumb results from early closure of its epiphyses. It has been noted that the base of the distal phalanx is broader than the surface of the proximal phalanx to which it articulates, and that the distal end of the bone often shows some hyperplasia. There are various degrees of thumb shortening, either unilaterally or bilaterally. 1 – BDD is characterised by the anatomic characteristics where the last bone of one or both thumbs is short and round, featured with an accompanying short and wide nail bed.These are the TOP 10 facts about Brachydactyly type-D (BDD): What is Brachydactyly type-D you may ask? Others also think about her two unusual thumbs.Īfter Megan Fox’s clubbed thumb became an internet hit in 2009, one could argue that she is likely the most well-known person in the world who has Brachydactyly type-D. When some think of Megan fox, they think of her sexy personality, her amazing movie roles and perfect skin.
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