Clubbed thumb
Brachydactyly type D | |
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![]() Top view of a child with asymmetric brachydactyly type D thumb. | |
Classification and external resources |
Side view of a child with asymmetric BDD
"Clubbed thumb" is a misnomer for stub(by) thumb, known clinically as brachydactyly type D, or BDD.[1] BDD is a harmless genetic trait characterized by the last bone of one or both thumbs being short and round with an accompanying short and wide nail bed.[2]
Digital clubbing,[3] however, is a "clinical sign associated with a number of diseases."[4]
Other names
The condition is also sometimes known as potter's thumb.[1]
References
- 1 2 Online 'Mendelian Inheritance in Man' (OMIM) Brachydactyly, Type D; BDD. -113200
- ↑ Alessandro Castriota-Scanderbeg, Bruno Dallapiccola (2005). Abnormal Skeletal Phenotypes: From Simple Signs to Complex Diagnoses. Springer. p. 962. ISBN 3540679979.
- ↑ "National Center for Biotechnology Information". www.ncbi.nlm.nih.gov. Retrieved 2015-09-18.
- ↑ "Digital Clubbing: A Sign of Underlying Disease" (PDF). Hospital Physician.
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