Polydactyly
Polydactyly is a birth defect which may affects 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
Polydactyly Media
Illustration of a postaxial polydactyly right hand.
- Polydactyly preaxial.gif
Illustration of a preaxial polydactyly right hand.
- Shh ectopic expression.gif
Preaxial polydactyly: Ectopic SHH-expression, Hemingway mutant, mouse, right forelimb
- Nuremberg chronicles - Strange People - Twelve Fingers (XIIv).jpg
Twelve-fingered man, illustrated in the 1493 Nuremberg Chronicles
- Fig 5 29-11-2013-vereinfacht-deutsch.jpg
Biased number of polydactylous toes in a Maine Coon population
- Polydactyly (cropped).jpg
Male with unilateral preaxial polydactyly affecting the left thumb. The supernumerary digit had normal sensation but no joint and hence could not move independently.
- Polydactyly Left Hand.jpg
Type 1 ulnar polydactyly. An extra digit is attached by skin and nerves.
Preaxial polydactyly of the right hand.
- X-ray of feet in polydactyly.jpg
Right-sided duplication of the right little toe in an 8.5 months old male, with two toes (fifth and sixth) apparently forming joints with the fifth metatarsal bone, which is mildly broadened distally. The duplicated toes have almost normal growth. The fifth toe has mild varus angulation, and the sixth toe has substantial valgus angulation.
Related pages
References
 |
Wikimedia Commons has media related to Lua error in Module:Commons_link at line 47: attempt to index field 'wikibase' (a nil value).. |
- 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.