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Congenital clasped thumb describes an anomaly which is characterized by a fixed thumb into the palm at the metacarpophalangeal joint in one or both hands. [5] The incidence and genetic background are unknown. A study of Weckesser et al. showed that boys are twice as often affected with congenital clasped thumb compared to girls.
Brachydactyly type D, also known as short thumb, [3] [1] stub thumb, [5] [6] or clubbed thumb, [5] [6] is a genetic trait recognised by a thumb being relatively short and round with an accompanying wider nail bed. The distal phalanx of such thumbs is approximately two-thirds the length of full-length thumbs.
TGuard is the brand name for a medical device used to stop chronic thumb sucking among children and young adults. It is manufactured in the USA by MED et al., Inc. Referred to commonly by dentists as a ThumbGuard, the company claims that it is the most effective removable appliance therapy used to stop and prevent thumb sucking.
Thumb hypoplasia is a spectrum of congenital abnormalities of the thumb varying from small defects to complete absence of the thumb. [1] It can be isolated, when only the thumb is affected, and in 60% of the cases [ 2 ] it is associated with radial dysplasia [ 1 ] (or radial club, radius dysplasia, longitudinal radial deficiency).
Pollicization (or pollicisation) is a hand surgery technique in which a thumb is created from an existing finger. Typically this consists of surgically migrating the index finger to the position of the thumb in patients who are either born without a functional thumb (most common) or in patients who have lost their thumb traumatically and are not amenable to other preferred methods of thumb ...
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Thumbs are defined as unacceptable if IP joint deviation exceeds 15 degrees, MCP joint deviation exceeds 30 degrees, and thumb size is inappropriate based on the examiner's assessment. Also, thumb size one-third greater or less than the contralateral thumb is defined as unacceptable. [12]