Polydactyly

Polydactyly is a birth defect which may affect the hands, feet, or both. It causes one or more extra fingers or toes. It can affect people, and other mammals such as dogs, and cats.

It is also called hyperdactyly. It is the opposite of oligodactyly.

 Diagnosis/Classification 

 Ulnar polydactyly 
The classification of ulnar polydactyly exists of either two or three types. In type A, there is another finger at the metacarpophalangeal joint. In type B, there may be a nubbin to an extra finger part.

 Radial polydactyly 
The Wassel classification is the most popular classification of radial polydactyly. It is widely used by many scientists.

 People with polydactyly 

 Real-life people 

 Antonio Alfonseca, retired baseball pitcher.
 Endre Ady, a Hungarian poet
 Gemma Arterton, an English actress
 Robert Chambers and William
 Lucille Clifton, an African-American poet and civil rights advocate
 Zerah Colburn, American prodigious math calculating savant
 Calvin Choy, a Hong Kong singer
 Vicente Fox, former President of Mexico
 Danny Garcia, boxing champion
 Yoandri Hernández Garrido has six fully formed fingers on both hands and six perfect toes on each foot.
 Hampton Hawes, jazz pianist
 Henry II the Pious, High Duke of Poland 1238–1241
 Hong Hong has 31 fingers and toes.
 Kamani Hubbard was born with 12 fingers and 12 toes, all fully functional.
 Johann Jacob Freiherr von Moscon, Lower Styrian baron
 Jiang Qing, Mao Zedong's fourth wife
 Hrithik Roshan, a Bollywood actor
 Nayanthara, an Indian actress
 Akshat Saxena from Uttar Pradesh, India
 Garfield Sobers, West Indian cricketer
 Theodore Roosevelt "Hound Dog" Taylor, Chicago-based American blues guitarist
 Varalakshmi V
 Volcacius Sedigitus, a Roman poet
 Zhu Yunming, a Chinese calligrapher, had six fingers on his right hand.[citation needed]
 Reggy B, a drag queen and contestant on the second season of Drag Race Holland

 Fictional people 

 Hannibal Lecter from The Silence of the Lambs
 Stanford Pines from Gravity Falls
 Tyrone Rugen from The Princess Bride
 Void from the manga series Berserk
 Zigzag from The Thief and the Cobbler
 Billy from Adventure Time
 Kinzo Ushiromiya from Umineko When They Cry
 Leah Nichols from For Better or For Worse


 Related pages 

 Oligodactyly

References

 Swanson AB (1976). "A classification for congenital limb malformations". J Hand Surg Am. 1 (1): 8–22. doi:10.1016/s0363-5023(76)80021-4. PMID 1021591.Watt AJ, Chung KC (2009). "Duplication". Hand Clin. 25 (2): 215–227. doi:10.1016/j.hcl.2009.01.001. PMID 19380061.
 Biesecker LG (2002). "Polydactyly: how many disorders and how many genes". Am J Med Genet. 12 (3): 279–83. doi:10.1002/ajmg.10779. PMID 12357471.
 Hirota, Yuka; Ueda, Koichi; Umeda, Chizuru; Yoshida, Eriko (2022-11-03). "New Notations for Better Morphological Distinction of Postaxial Polydactyly of the Foot". Plastic and Reconstructive Surgery Global Open. 10 (11): e4504. doi:10.1097/GOX.0000000000004504. ISSN 2169-7574. PMC 9633084. PMID 36348750.
 Eaton, Charles. "Polydactyly (Extra Fingers)". Retrieved 9 February 2010.
Category:Limbs and extremities
Category:Developmental disorders