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Webbed toes are also known as "twin toes," "duck toes," "turkey toes," "tree toes" and "tiger toes." Severity can vary. Most cases involve the second and third toes but any number of toes can be involved. In some cases the toes are joined part way while in some the webbing can extend right up to the nails.
In early human fetal development, webbing (syndactyly) of the toes and fingers is normal. At about 6 weeks of gestation, apoptosis takes place due to a protein named sonic hedgehog, also known as SHH, which dissolves the tissue between the fingers and toes, and the webbing disappears. In some fetuses, this process does not occur completely ...
Webbed feet are the result of mutations in genes that normally cause interdigital tissue between the toes to apoptose. [8] Apoptosis, or programmed cell death, in development is mediated by a variety of pathways, and normally causes the creation of digits by death of tissue separating the digits.
Plovers and lapwings have a vestigial hind toe (1), and sandpipers and their allies have a reduced and raised hind toe barely touching the ground. The sanderling is the only sandpiper having 3 toes (tridactyl foot). [3] Lobate: the anterior digits (2–4) are edged with lobes of skin. Lobes expand or contract when a bird swims.
“Toe separators between two toes serve the purpose of reducing discomfort from deformities that cause pressure between two toes (bunion, hammertoe, etc.),” Sharkey explains.
The somatosensory cortex representation of the hand is a dynamic reflection of the fingers on the external hand: in syndactyly people have a clubhand of webbed, shortened fingers. However, not only are the fingers of their hands fused, but the cortical maps of their individual fingers also form a club hand.
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Toe cramps, which happen when the muscles that flex and bend your toes involuntarily contract, are fairly common and can happen any time, even in the middle of the night, waking you up from an ...