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Arachnodactyly ("spider fingers") is a medical condition that is characterized by fingers and toes that are abnormally long and slender, in comparison to the palm of the hand and arch of the foot. In some cases, the thumbs of an individual with the condition are pulled inwards towards the palm.
Polydactyly is a birth defect that results in extra fingers or toes. [2] The hands are more commonly involved than the feet. [2] Extra fingers may be painful, affect self-esteem, or result in clumsiness. [3] It is associated with at least 39 genetic mutations. [4] It may either present alone or with other defects. [2] Cases may run in families. [2]
Polysyndactyly may be classified by the level of duplication. The extra digit may be small and comprise only soft tissue, [7] but usually includes at least one bone, most commonly the distal and middle phalanges. [4] [8] Partial or complete duplication of the proximal phalanx, metacarpal or metatarsal can also occur. [4] [7]
Though the woman reports that she is only 151cm, or 4' 11", tall, an image in her blog post shows one of her lengthy metatarsals clocking in at an impressive 5cm, or 2in.
The skin between the fingers and toes may be fused (cutaneous syndactyly). This disorder is also characterized by widely spaced eyes (ocular hypertelorism), an abnormally large head size (macrocephaly), and a high, prominent forehead. Rarely, affected individuals may have more serious medical problems including seizures and developmental delay. [1]
In biology, dactyly is the arrangement of digits (fingers and toes) on the hands, feet, or sometimes wings of a tetrapod animal. The term is derived from the Greek word δακτυλος (dáktylos) meaning "finger." Sometimes the suffix "-dactylia" is used. The derived adjectives end with "-dactyl" or "-dactylous."
Another possible explanation is poor circulation. Medical conditions, like diabetes, can slow down the blood flow through the fingers and toes, and affect the quality of the skin. 4. Spoon-Shaped ...
type I: 2q34-q36; [5] webbing occurs between middle and ring fingers and/or second and third toes. type II: 2q31; [6] also involves long and ring fingers, but has a sixth finger merged in between. type III: 6q21-q23; small finger is merged into the ring finger. type IV: 7q36; [7] involves all fingers and/or toes.